stretch out vs stretch forth

stretch out and stretch forth both are verbs.

Word	Noun	Adjective	Verb	Adverb
stretch out	No	No	Yes	No
stretch forth	No	No	Yes	No

As verbs, stretch out and stretch forth are synonyms defined as:

Other synonyms of stretch out include exsert, extend, hold out, put out.

stretch out (verb)	stretch forth (verb)
stretch (the neck) so as to see better	thrust or extend out
thrust or extend out
extend one's body or limbs
extend or stretch out to a greater or the full length
lie down comfortably