attach vs stick to

attach and stick to both are verbs.

Word	Noun	Adjective	Verb	Adverb
attach	No	No	Yes	No
stick to	No	No	Yes	No

As verbs, stick to is a hyponym of attach; that is, stick to is a word with a more specific, narrower meaning than attach:

Other hyponyms of attach include agglutinate, implant, fasten, adhere, bind, bond, hold fast, stick, spat.

attach (verb)	stick to (verb)
become attached	keep to
cause to be attached	stick to firmly
be attached; be in contact with
take temporary possession of as a security, by legal authority
create social or emotional ties