to learn, to acquire knowledge / to wear (clothes, accessories, etc.), to put on

(dance) choreographer

affectation

police dog

attach, affix, stick, fasten, add, add on, append; set, put, put one thing on another / apply, put on / leave a mark on / write, make an entry / give, impart, direct, direct one's attention

Watch yourself, be careful, literally, "keep your health" / take care (used when parting)

apply medicine

give courage to, encourage

stain, blot, smudge

(idiomatic) settle a matter / (idiomatic) negotiate, arrange