frill vs ornament

frill and ornament both are nouns.

Word	Noun	Adjective	Verb	Adverb
frill	Yes	No	No	No
ornament	Yes	No	Yes	No

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

Other hypernyms of frill include decoration, ornamentation.

frill (noun)	ornament (noun)
a strip of pleated material used as a decoration or a trim	something used to beautify
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

frill (verb)	ornament (verb)
	make more attractive by adding ornament, colour, etc.
	be an ornament to