drool vs covet

drool is a noun but covet is not a noun.

Word	Noun	Adjective	Verb	Adverb
drool	Yes	No	Yes	No
covet	No	No	Yes	No

As verbs, covet is a hypernym of drool; that is, covet is a word with a broader meaning than drool:

drool: be envious, desirous, eager for, or extremely happy about something
covet: wish, long, or crave for (something, especially the property of another person)

drool (noun)	covet (noun)
saliva spilling from the mouth
pretentious or silly talk or writing

drool (verb)	covet (verb)
let saliva drivel from the mouth	wish, long, or crave for (something, especially the property of another person)
be envious, desirous, eager for, or extremely happy about something