frill vs ornamentation

frill and ornamentation both are nouns.

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

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

Other hypernyms of frill include decoration, ornament.

frill (noun)	ornamentation (noun)
a strip of pleated material used as a decoration or a trim	the act of adding extraneous decorations to something
ornamental objects of no great value	something used to beautify
an external body part consisting of feathers or hair about the neck of a bird or other animal	the state of being ornamented
(paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinosaurs