the cataclysmic catalyst

Pleonasm, a type of tautology, is the redundancy in linguistic expressions such as -black darkness- or -burning fire- which already imply one part of the expression by the other. Giants are already, by definition, big. Pleonasm can be a literary device to give emphasis or dramatic effect, sometimes reflects established usage such as -safe haven-, or can simply be an excess. Laconic refers to extreme brevity; an oxymoron is an apparent contradiction in terms (however, there is nothing inherently unfriendly about a giant); an aphorism is a pithy statement of a general truth.