frill vs external body part

frill and external body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
frill	Yes	No	No	No
external body part	Yes	No	No	No

As nouns, external body part is a hypernym of frill; that is, external body part is a word with a broader meaning than frill:

frill: an external body part consisting of feathers or hair about the neck of a bird or other animal
external body part: any body part visible externally

frill (noun)	external body part (noun)
a strip of pleated material used as a decoration or a trim	any body part visible externally
ornamental objects of no great value
an external body part consisting of feathers or hair about the neck of a bird or other animal
(paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinosaurs