attend to vs attend

attend to and attend both are verbs.

Word	Noun	Adjective	Verb	Adverb
attend to	No	No	Yes	No
attend	No	No	Yes	No

As verbs, attend to and attend are synonyms defined as:

Other synonyms of attend to include assist, serve, wait on.

attend to (verb)	attend (verb)
get down to; pay attention to; take seriously	give heed (to)
work for, or be a servant to	work for, or be a servant to
	take charge of or deal with
	be present at (meetings, church services, university), etc.
	to accompany as a circumstance or follow as a result