robe vs tog

robe is a noun but tog is not a noun.

Word	Noun	Adjective	Verb	Adverb
robe	Yes	No	Yes	No
tog	No	No	Yes	No

As verbs, tog is a hypernym of robe; that is, tog is a word with a broader meaning than robe:

Other hypernyms of robe include apparel, clothe, dress, enclothe, fit out, garb, garment, habilitate, raiment.

robe (noun)	tog (noun)
any loose flowing garment
outerwear consisting of a long flowing garment used for official or ceremonial occasions

robe (verb)	tog (verb)
clothe formally; especially in ecclesiastical robes	provide with clothes or put clothes on
cover as if with clothing