stand out vs excel at

stand out and excel at both are verbs.

Word	Noun	Adjective	Verb	Adverb
stand out	No	No	Yes	No
excel at	No	No	Yes	No

As verbs, excel at is a hyponym of stand out; that is, excel at is a word with a more specific, narrower meaning than stand out:

Other hyponyms of stand out include exceed, go past, overstep, pass, top, transcend, outrank, rank, shine at.

stand out (verb)	excel at (verb)
be stubborn in resolution or resistance	be good at
steer away from shore, of ships
distinguish oneself
be highly noticeable