a name (word or phrase indicating a particular person, place, class, or thing) / (more specifically) a given name (excluding the surname)

smart

to use / to employ / to make use of, to apply / to spend

kanji

to use one's head

use one thing for many purposes / work someone hard

(computing) name resolution

given name

kanji approved for regular use by the 文部科学省 (Monbu-kagaku-shō, “Japanese Ministry of Education”)

Sino-Korean vocabulary or "Hanja-eo"