envy vs begrudge

envy is a noun but begrudge is not a noun.

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

As verbs, envy and begrudge are synonyms defined as:

envy (noun)	begrudge (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

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