landscape vs adorn

landscape is a noun but adorn is not a noun.

Word	Noun	Adjective	Verb	Adverb
landscape	Yes	No	Yes	No
adorn	No	No	Yes	No

As verbs, adorn is a hypernym of landscape; that is, adorn is a word with a broader meaning than landscape:

Other hypernyms of landscape include beautify, decorate, embellish, grace, ornament.

landscape (noun)	adorn (noun)
a genre of art dealing with the depiction of natural scenery
painting depicting an expanse of natural scenery
an extensive mental viewpoint
an expanse of scenery that can be seen in a single view

landscape (verb)	adorn (verb)
do landscape gardening	make more attractive by adding ornament, colour, etc.
embellish with plants	furnish with power or authority; of kings or emperors
	be beautiful to look at