noun
A octagon is a octagon without the same angles as the others.
An octagon can be used to create a tessellation, but an octagon cannot tessellate on its own.
Octagons is the plural of octagon
An octagon has 8 sides and 8 corners.
An octagon has 8 vertices.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "lecturer" is a noun.
The part of speech for "indefinite" is an adjective.
The part of speech for "buried" is a verb.