toady vs groveller

toady and groveller both are nouns.

Word	Noun	Adjective	Verb	Adverb
toady	Yes	No	Yes	No
groveller	Yes	No	No	No

As nouns, groveller is a hyponym of toady; that is, groveller is a word with a more specific, narrower meaning than toady:

toady: a person who tries to please someone in order to gain a personal advantage
groveller: someone who humbles himself as a sign of respect; who behaves as if he had no self-respect

Other hyponyms of toady include apple polisher, bootlicker, fawner, groveler, truckler, goody-goody.

toady (noun)	groveller (noun)
a person who tries to please someone in order to gain a personal advantage	someone who humbles himself as a sign of respect; who behaves as if he had no self-respect

toady (verb)	groveller (verb)
try to gain favor by cringing or flattering