(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

(grammar) active voice

(archaic) one who travels: a traveler

(historical) a person from the Goguryeo or Goryeo kingdoms on the Korean Peninsula

union, combination / (mathematics) congruence (of matrix, integer, shape)

(photography, computer graphics) resolution

active (given to action)

concentration, density / (set theory) cardinality

(typography) the distribution of any plural number of lines and leads so that they fit a specific number of ems, for example, 2 or 3 lines within 4 ems