- rectangle
- quadrilateral
- rhombus
- trapezoid
- parallel
- congruence
- triangle
- parallelepiped
- conic
- polygon
- quadrangle
- ellipse
- geometry
- square
- hexagon
- simple polygon
- isosceles
- diagonals
- swage
- concavity
- ogee
- cuboid
- geometrical
- rectangular
- toroid
- if and only if
- geometric
- squareness
- squarish
- squarely
- diamond
- rhomboid
- quadrate
- quadratic
- oblong
- nonsquare
- squarewise
- tetragon
- rhomb
- octagon
- hypercube
- foursquare
- contour
- cubic
- tesseract
- piazza
- shape
- shapely
- trapezoidal
- figure
- shaper
- shapen
- euclidean geometry
- delineates
- nontrivial
- toroidal
- delineation
- reshape
- parabola
- delineating
- skein
- unalterable
- hyperplane
- shapeless
- adjoint
- regular polygon
- formation
- bipartite
- tangential
- hermeneutic
- ramified
- hypotenuse
- superposition
- encapsulating
- morpheme
- matroid
- polytope
- vertices
- dimple
- multiform
- semicircle
- convexity
- straightness
- contiguity
- overhand
- chitinous
- transversal
- concave
- discontinuous
- angularity
- unshaped
- preshape
- roofline
- domeshaped
- hypergraph
- topography
- morpho
- shapelet
- arches
- shapable
- y-shaped
- trigonometry
- foreshape
- cube
- delimiting
- curvature
- right-angled
- form
- plaza
- cubism
- plasm
- non-planar
- roughhew
- figurable
- misshape
- waveshape
- t-shaped
- unshape
- converse
- shapedness
- squircle
- transhape
- monomorphic
- conventional
- omniform
- wide-open
- morphic
- ring-shaped
- overshape
- left-right
- waveform
- non-degenerate
- c-shaped
- morphous
- preform
- square meal
- formless
- non-trivial
- geometric figure
- square-shaped
- triangle-shaped
- pentagram
- plasmatic
- columnar
- falciform
- amorphous
- tetrad
- four side
- 155-pound
- beshape
- efform
- non-moving
- individuate
- superspecies
- two-sided
- tractable
- extremal
- polymorphic
- non-homogeneous
- toruffle
- undersurface
- shapechanger
- stabilator
- residuated
- wedge-shaped
- bacillus
- one-and-a-half-story
- alpha-helix
- forelimb
- quick-release
- conoid
- half-sized
- scape
- sub-division
- biquadratic
- 5-bit
- headrest
- backrest
- non-overlapping
- hook-shaped
- square circle
- qualla
- horse-shoe
- non-hierarchical
- wormlike
- forshape
- spiral-shaped
- lineament
- shipshape
- four-vector
- turkman
- basketweave
- nondegenerate
- morphism
- accretionary
- biformed
- zoomorphic
- rollbar
- delimits
- trichotomy
- oligomeric
- α-helix
- omnitruncated
- groupoid
- dome-like
- ribbon-like
- half-circle
- v-shape
- pass-through
- cigar-shaped
- α-helical
- makedom
- malleiform
- antiform
- deform
- right angle
- automorphic
- carpenter's square
- parallel postulate
- formalize
- morphometrics
- supercube
- hyperbola
- figurine
- biform
- cubelike
- checkerboard
- sine
- template
- aspergilliform
- subform
- byform
- amentiform
- nanoform
- gestalt
- bromoform
- araneiform
- neoformed
- semiform
- acneform
- glycoform
- newform
- urform
- t square
- inradius
- shapechanging
- greek language
- formable
- triquetra
- subfigure
- obround
- bimedial
- shapeshift
- homiform
- wordshaping
- anticlastic
- square inch
- formfilling
- median
- circumradius
- square up
- heart shape
- roughcast
- on square
- pilaster
- tetrahedron
- semicircles
- boxology
- dodecahedron
- lamella
- polyhedron
- ellipsoid
- cruciform
- corbel
- mullions
- convex
- gnomon
- transept
- valance
- sawtooth
- binnacle
- oculus
- quoins
- hexagram
- apse
- pintle
- baluster
- lunette
- tracery
- tympanum
- dihedral
- mansard
- openwork
- spandrels
- octahedron
- jamb
- reredos
- pawl
- trunnion
- protrusion
- casement
- fanlight
- volute
- diversiform
- formboard
- apotome
- square foot
- torus
- figure eight
- centroid
- try square
- camo
- virgate
- t shape
- iodoform
- ancony
- midpoint
- amorphous shape
- square yard
- spatial property
- angular shape
- take shape
- trapezium
- crenellations
- bevels
- crosspieces
- cantilevering
- peapod
- aerofoil
- tonneau
- foglamp
- serifs
- corrugation
- sheave
- diffusor
- tesserae
- grillwork
- crossbeams
- louvres
- featherlike
- nosepiece
- bullnose
- strakes
- octagons
- bedplate
- stipple
- synclinal
- splines
- keyways
- rhomboids
- commissure
- chamfer
- frustum
- horizontality
- square metre
- acute triangle
- right triangle
- pizza table
- conic section
- block diagram
- ticky box
- steel square
- in form
- three dimensional
- single curve
- town square
- two dimensional
- tax form
- axis of symmetry
- trench cut
- square root
- oblique angle
- projective geometry
- analytic geometry
- free form
- balloon animal
- compound curve
- six side
- mid season form
- face
- exterior angle
- central angle
- automedian triangle
- equilateral triangle
- isosceles triangle
- gable roof
- newel post
- radiator grille
- hipped roof
- triangular prism
- gothic arch
- casement window
- torsion bar
- plumb bob
- piston rod
- convex polygon
- concave polygon
- conjugate diameters
- tangent line
- compass and straightedge constructions
- tangent parallelogram
- curved
- angular
- hexagonal
- octagonal
- cylindrical
- conical
- curving
- cantilever
- spherical
- rectangles
- arched
- lattice
- diagonal
- symmetrical
- l shaped
- flange
- angled
- cantilevered
- diagonally
- steering column
- elongated
- spire
- pleats
- bulkhead
- trusses
- silhouette
- sills
- protrude
- rear axle
- rear
- arcs
- geometric shapes
- cupola
- sculptured
- slats
- coil
- fascia
- grille
- panes
- cowl
- crescent
- translucent
- truss
- sloping
- triangles
- contoured
- tachometer
- orb
- overhangs
- outer
- boxy
- inverted
- width
- fenders
- air intakes
- bulbous
- pistons
- sloped
- horizontal
- folds
- pergola
- perpendicular
- aft
- jutting
- plexiglas
- elliptical
- instrument cluster
- wooden beams
- wavy
- rear wheel
- protruding
- pleated
- symmetry
- filaments
- oval shaped
- blocky
- retractable
- cone shaped
- welded
- outer shell
- machined
- detachable
- bezel
- cutaway
- outwards
- adjustable
- beams

That's about all the parallelogram related words we've got! I hope this list of parallelogram terms was useful to you in some way or another. The words down here at the bottom of the list will be in some way associated with parallelogram, but perhaps tenuously (if you've currenly got it sorted by relevance, that is). If you have any feedback for the site, please post it here, but please note this is only a hobby project, so I may not be able to make regular updates to the site. Have a nice day! 🐡