(product development) project

project (planned endeavour)

an advance; progress

make progress

project management

chord progression

(physics) travelling wave (wave that is not bounded by a given space, but can propagate freely)

The hiragana syllable こ (ko). Its equivalent in katakana is コ (ko). It is the tenth syllable in the gojūon order; its position is か行お段 (ka-gyō o-dan, “row ka, section o”).

此: (derogatory) you / 是: (humble) you

(vulgar, slang) female genitals: a cunt, a pussy / (Internet slang, derogatory, offensive) a woman