slobber vs spittle

slobber and spittle both are nouns.

Word	Noun	Adjective	Verb	Adverb
slobber	Yes	No	Yes	No
spittle	Yes	No	No	No

As nouns, spittle is a hypernym of slobber; that is, spittle is a word with a broader meaning than slobber:

slobber: saliva spilling from the mouth
spittle: a clear liquid secreted into the mouth by the salivary glands and mucous glands of the mouth; moistens the mouth and starts the digestion of starches

Other hypernyms of slobber include saliva, spit.

slobber (noun)	spittle (noun)
saliva spilling from the mouth	a clear liquid secreted into the mouth by the salivary glands and mucous glands of the mouth; moistens the mouth and starts the digestion of starches

slobber (verb)	spittle (verb)
let saliva drivel from the mouth