(the act of) distinguishing; discerning; discernment / knowing what is appropriate

extent / degree / law / formula / distance / limits / amount

live performance

gill (breathing organ of fish and other aquatic animals)

(ichthyology) gill slit

偉い, 豪い: great, admirable

実相: reality, the real state of affairs / 実装: an actual installation

実装: to actually install something

着想: idea, conception / 着装: putting on, fixing

Alternative form of エラトー (Eratō, “Erato”) (Muse of lyric poetry)