sun porch vs solarium

sun porch and solarium both are nouns.

Word	Noun	Adjective	Verb	Adverb
sun porch	Yes	No	No	No
solarium	Yes	No	No	No

As nouns, sun porch and solarium are synonyms defined as:

sun porch and solarium: a room enclosed largely with glass and affording exposure to the sun

Other synonyms of sun porch include sun lounge, sun parlor, sun parlour, sunporch, sunroom.

sun porch (noun)	solarium (noun)
a room enclosed largely with glass and affording exposure to the sun	a room enclosed largely with glass and affording exposure to the sun