thus vs therefore

thus is a noun but therefore is not a noun.

Word	Noun	Adjective	Verb	Adverb
thus	Yes	No	No	Yes
therefore	No	No	No	Yes

As adverbs, thus and therefore are synonyms defined as:

thus and therefore: (used to introduce a logical conclusion) from that fact or reason or as a result

Other synonyms of thus include hence, so, thence.

thus (noun)	therefore (noun)
an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation

thus (adverb)	therefore (adverb)
(used to introduce a logical conclusion) from that fact or reason or as a result	(used to introduce a logical conclusion) from that fact or reason or as a result
in the way indicated	as a consequence