deck vs decorate

deck is a noun but decorate is not a noun.

Word	Noun	Adjective	Verb	Adverb
deck	Yes	No	Yes	No
decorate	No	No	Yes	No

As verbs, decorate is a hypernym of deck; that is, decorate is a word with a broader meaning than deck:

Other hypernyms of deck include adorn, beautify, embellish, grace, ornament.

As verbs, deck and decorate are synonyms defined as:

Other synonyms of deck include adorn, beautify, embellish, grace.

deck (noun)	decorate (noun)
any of various platforms built into a vessel
street name for a packet of illegal drugs
a porch that resembles the deck on a ship
a pack of 52 playing cards

deck (verb)	decorate (verb)
knock down with force	provide with decoration
decorate	make more attractive by adding ornament, colour, etc.
be beautiful to look at	award a mark of honor, such as a medal, to
	be beautiful to look at