compound vs heighten

compound is a noun but heighten is not a noun.

Word	Noun	Adjective	Verb	Adverb
compound	Yes	Yes	Yes	No
heighten	No	No	Yes	No

As verbs, compound and heighten are synonyms defined as:

Other synonyms of compound include deepen, intensify.

As verbs, heighten is a hyponym of compound; that is, heighten is a word with a more specific, narrower meaning than compound:

Other hyponyms of compound include heat up, hot up, screw up, fan, enhance, raise, amplify, sharpen, sharpen.

compound (noun)	heighten (noun)
an enclosure of residences and other building (especially in the Orient)
a whole formed by a union of two or more elements or parts
a word (as anthropology, kilocycle, builder) consisting of any of various combinations of words, combining forms, or affixes.
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

compound (adjective)	heighten (adjective)
composed of more than one part
consisting of two or more substances or ingredients or elements or parts
composed of many distinct individuals united to form a whole or colony

compound (verb)	heighten (verb)
put or add together	increase the level of
make more intense, stronger, or more marked	become more extreme
combine so as to form a whole; mix	make more extreme; raise in quantity, degree, or intensity
create by mixing or combining	make more intense, stronger, or more marked
calculate principal and interest	make (one's senses) more acute
	increase the height of