singly vs individually

singly and individually both are adverbs.

Word	Noun	Adjective	Verb	Adverb
singly	No	No	No	Yes
individually	No	No	No	Yes

As adverbs, singly and individually are synonyms defined as:

Other synonyms of singly include on an individual basis, one by one, separately, severally.

singly (adverb)	individually (adverb)
one by one; one at a time	apart from others
apart from others