spice up vs spice

spice up is not a noun while spice is a noun.

Word	Noun	Adjective	Verb	Adverb
spice up	No	No	Yes	No
spice	Yes	No	Yes	No

As verbs, spice up and spice are synonyms defined as:

As verbs, spice up and spice are synonyms defined as:

Other synonyms of spice up include zest.

spice up (noun)	spice (noun)
	the property of being seasoned with spice and so highly flavored
	any of a variety of pungent aromatic vegetable substances used for flavoring food
	aromatic substances of vegetable origin used as a preservative

spice up (verb)	spice (verb)
make more interesting or flavorful	make more interesting or flavorful
add herbs or spices to	add herbs or spices to