sneak out vs steal away

sneak out and steal away both are verbs.

Word	Noun	Adjective	Verb	Adverb
sneak out	No	No	Yes	No
steal away	No	No	Yes	No

As verbs, sneak out and steal away are synonyms defined as:

Other synonyms of sneak out include slip away, slip out, sneak away, sneak off.

sneak out (verb)	steal away (verb)
leave furtively and stealthily	leave furtively and stealthily