platyrrhinian vs broadnosed

platyrrhinian is a noun but broadnosed is not a noun.

Word	Noun	Adjective	Verb	Adverb
platyrrhinian	Yes	Yes	No	No
broadnosed	No	Yes	No	No

As adjectives, platyrrhinian and broadnosed are synonyms defined as:

platyrrhinian and broadnosed: of or related to New World monkeys having nostrils far apart or to people with broad noses

Other synonyms of platyrrhinian include platyrhine, platyrhinian, platyrrhine, platyrrhinic.

platyrrhinian (noun)	broadnosed (noun)
hairy-faced arboreal monkeys having widely separated nostrils and long usually prehensile tails

platyrrhinian (adjective)	broadnosed (adjective)
of or related to New World monkeys having nostrils far apart or to people with broad noses	of or related to New World monkeys having nostrils far apart or to people with broad noses