begrudge vs envy

begrudge is not a noun while envy is a noun.

Word	Noun	Adjective	Verb	Adverb
begrudge	No	No	Yes	No
envy	Yes	No	Yes	No

As verbs, begrudge and envy are synonyms defined as:

begrudge (noun)	envy (noun)
	spite and resentment at seeing the success of another (personified as one of the deadly sins)
	a feeling of grudging admiration and desire to have something that is possessed by another

begrudge (verb)	envy (verb)
wish ill or allow unwillingly	be envious of; set one's heart on
be envious of; set one's heart on	feel envious towards; admire enviously