ornament vs ornamentation

ornament and ornamentation both are nouns.

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

As nouns, ornament and ornamentation are synonyms defined as:

Other synonyms of ornament include decoration.

ornament (noun)	ornamentation (noun)
something used to beautify	the act of adding extraneous decorations to something
	something used to beautify
	the state of being ornamented

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