garland vs embellish

garland is a noun but embellish is not a noun.

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

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

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

garland (noun)	embellish (noun)
flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes
an anthology of short literary pieces and poems and ballads etc.

garland (verb)	embellish (verb)
adorn with bands of flowers or leaves	make more beautiful
	add details to
	make more attractive by adding ornament, colour, etc.
	be beautiful to look at