lighthearted vs blithesome

lighthearted and blithesome both are adjectives.

Word	Noun	Adjective	Verb	Adverb
lighthearted	No	Yes	No	No
blithesome	No	Yes	No	No

As adjectives, lighthearted and blithesome are synonyms defined as:

Other synonyms of lighthearted include blithe, light-hearted, lightsome.

lighthearted (adjective)	blithesome (adjective)
carefree and happy and lighthearted	carefree and happy and lighthearted