告 (Kanji for inform)

Onyomi

KOKU

He informed me with his mouth: don't hurl balls while high on COKE!!!

つ*げる	to tell ★★☆☆☆

と or を告白(こくはく) する	confess ★★★☆☆ 告 (inform) + 白 (white) = 告白 (confess) to confess- both to a crime and to having a huge crush on me.
広告(こうこく)	advertisement ★★★☆☆ 広 (wide) + 告 (inform) = 広告 (advertisement) an advertisement - although nowadays people use the Japlish word シーエム (CM, short for 'commercial.')
報告(ほうこく)	report ★★☆☆☆ NP 報 (data) + 告 (inform) = 報告 (report) A report - or maybe just 'data' is better? Compared to the related term 情報 (news report), 報告 has more of a nuance of a scientific, governmental, or corporate feeling. Think about it like this: 報告 are commissioned by private agencies, and then journalists do a 情報 about the 報告.
忠告(ちゅうこく) する	admonish ★☆☆☆☆ 忠 (loyalty) + 告 (inform) = 忠告 (admonish) admonishing negative advice: "Don't open that door!" "Don't swim naked!"

Seeing a SAMURAI is a good omen,
but you THROW information to your friends - 'Hey I just saw a damn samurai!'

Steve Austin overcame the loss of his LEGS and went on to fight crime as the six million dollar man.