use, usage

hide; conceal oneself / become invisible; become latent / (euphemistic, honorific) to die

radar (method of detecting distant objects)

(Greek mythology) Leda

(only in compounds) stealth

technology; technique; technical

use, utilize

an enemy / revenge, vengeance / opponent (of the game or conflict) / (archaic, obsolete) marriage partner

an enemy / an opponent, a competitor / (historical) the other party in a lawsuit / 的: (historical) in the red-light district, a term of reference used between prostitutes and customers

的: (historical) (by extension from the red-light district usage) term of third-person reference: that guy, that one