garden chair vs lawn chair

garden chair and lawn chair both are nouns.

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

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

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

garden chair (noun)	lawn 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