lawn chair vs garden chair

lawn chair and garden chair both are nouns.

Word	Noun	Adjective	Verb	Adverb
lawn chair	Yes	No	No	No
garden chair	Yes	No	No	No

As nouns, lawn chair and garden chair are synonyms defined as:

lawn chair and garden chair: chair left outside for use on a lawn or in a garden

lawn chair (noun)	garden chair (noun)
chair left outside for use on a lawn or in a garden	chair left outside for use on a lawn or in a garden