a self-appointed ruler / (historical, Edo period) a so-called “chivalrous man”, a gangster or gambler who stood against the samurai

(mineralogy) phonolite

Good things don't last forever. Roses have thorns.

breathing heavily; strained breathing / gently blowing on something to cool it down

to breath heavily / to gently blow so as to cool something down

(fandom slang) fan fiction

to rot / to increase

side of a ship

increase / grow / multiply / augment / enlarge / expand

boat, ship, small ship