sprig vs branchlet

sprig and branchlet both are nouns.

Word	Noun	Adjective	Verb	Adverb
sprig	Yes	No	No	No
branchlet	Yes	No	No	No

As nouns, sprig and branchlet are synonyms defined as:

sprig and branchlet: a small branch or division of a branch (especially a terminal division); usually applied to branches of the current or preceding year

Other synonyms of sprig include twig.

sprig (noun)	branchlet (noun)
an ornament that resembles a spray of leaves or flowers	a small branch or division of a branch (especially a terminal division); usually applied to branches of the current or preceding year
a small branch or division of a branch (especially a terminal division); usually applied to branches of the current or preceding year