garnish vs embellish

garnish is a noun but embellish is not a noun.

Word	Noun	Adjective	Verb	Adverb
garnish	Yes	No	Yes	No
embellish	No	No	Yes	No

As verbs, embellish is a hypernym of garnish; that is, embellish is a word with a broader meaning than garnish:

Other hypernyms of garnish include adorn, beautify, decorate, grace, ornament.

garnish (noun)	embellish (noun)
any decoration added as a trimming or adornment
something (such as parsley) added to a dish for flavor or decoration

garnish (verb)	embellish (verb)
decorate (food), as with parsley or other ornamental foods	make more beautiful
take a debtor's wages on legal orders, such as for child support	add details to
	make more attractive by adding ornament, colour, etc.
	be beautiful to look at