interior designer vs designer

interior designer and designer both are nouns.

Word	Noun	Adjective	Verb	Adverb
interior designer	Yes	No	No	No
designer	Yes	No	No	No

As nouns, interior designer and designer are synonyms defined as:

interior designer and designer: a person who specializes in interior design

interior designer (noun)	designer (noun)
a person who specializes in interior design	someone who creates plans to be used in making something (such as buildings)
	someone who designs clothing
	a person who specializes in interior design
	a person who devises plots or intrigues
	someone who specializes in graphic design