cuspidal vs cusped

cuspidal and cusped both are adjectives.

Word	Noun	Adjective	Verb	Adverb
cuspidal	No	Yes	No	No
cusped	No	Yes	No	No

As adjectives, cuspidal and cusped are synonyms defined as:

Other synonyms of cuspidal include cuspate, cuspated, cuspidate, cuspidated.

cuspidal (adjective)	cusped (adjective)
having cusps or points	having cusps or points