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

子猫: kitten, young cat / 小猫: small cat

喉: counter for fish / 献:

事: thing / 坤: / 金: one of the five classical elements in traditional Chinese philosophy and medicine: see the "Wu Xing" entry on Wikipedia / 根: perseverance, patience; (arithmetic) root

今: this

今: a surname / 鯀: Gun (Chinese)

(Internet slang) Short for こんにちは. / (Internet slang) Short for こんばんは.

過去: past

(dialect, Kagoshima) this thing