doughnut-shaped vs circinate

doughnut-shaped and circinate both are adjectives.

Word	Noun	Adjective	Verb	Adverb
doughnut-shaped	No	Yes	No	No
circinate	No	Yes	No	No

As adjectives, doughnut-shaped and circinate are synonyms defined as:

Other synonyms of doughnut-shaped include annular, annulate, annulated, ring-shaped, ringed.

doughnut-shaped (adjective)	circinate (adjective)
shaped like a ring	shaped like a ring