imprint vs concave shape

imprint and concave shape both are nouns.

Word	Noun	Adjective	Verb	Adverb
imprint	Yes	No	Yes	No
concave shape	Yes	No	No	No

As nouns, concave shape is a hypernym of imprint; that is, concave shape is a word with a broader meaning than imprint:

Other hypernyms of imprint include concavity, incurvation, incurvature.

imprint (noun)	concave shape (noun)
a device produced by pressure on a surface	a shape that curves or bends inward
a distinctive influence
an impression produced by pressure or printing
an identification of a publisher; a publisher's name along with the date and address and edition that is printed at the bottom of the title page
a concavity in a surface produced by pressing

imprint (verb)	concave shape (verb)
mark or stamp with or as if with pressure
establish or impress firmly in the mind