gobsmacked

As adjectives the difference between gobsmacked and scared

is that gobsmacked is (chiefly|british|slang) flabbergasted, astounded, speechless, overawed while scared is having fear; afraid, frightened.

As a verb scared is

(scare).

As adjectives the difference between gobsmacked and gutted

is that gobsmacked is (chiefly|british|slang) flabbergasted, astounded, speechless, overawed while gutted is (not comparable) eviscerated.

As a verb gutted is

(gut).

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective gobsmacked is

flabbergasted, astounded, speechless, overawed.