world-shattering vs world-shaking

world-shattering and world-shaking both are adjectives.

Word	Noun	Adjective	Verb	Adverb
world-shattering	No	Yes	No	No
world-shaking	No	Yes	No	No

As adjectives, world-shattering and world-shaking are synonyms defined as:

world-shattering and world-shaking: sufficiently significant to affect the whole world

Other synonyms of world-shattering include earthshaking.

world-shattering (adjective)	world-shaking (adjective)
sufficiently significant to affect the whole world	sufficiently significant to affect the whole world