trimming vs adornment

trimming and adornment both are nouns.

Word	Noun	Adjective	Verb	Adverb
trimming	Yes	No	No	No
adornment	Yes	No	No	No

As nouns, adornment is a hypernym of trimming; that is, adornment is a word with a broader meaning than trimming:

trimming: a decoration or adornment typically on the edge of a garment
adornment: a decoration of color or interest that is added to relieve plainness

trimming (noun)	adornment (noun)
the act of adding decoration	the action of decorating yourself with something colorful and interesting
cutting down to the desired size or shape	a decoration of color or interest that is added to relieve plainness
a decoration or adornment typically on the edge of a garment