SoHo vs South of Houston

SoHo and South of Houston both are nouns.

Word	Noun	Adjective	Verb	Adverb
SoHo	Yes	No	No	No
South of Houston	Yes	No	No	No

As nouns, SoHo and South of Houston are synonyms defined as:

SoHo and South of Houston: a district in southwestern Manhattan noted for its shops and restaurants and galleries and artist's lofts

SoHo (noun)	South of Houston (noun)
a district in southwestern Manhattan noted for its shops and restaurants and galleries and artist's lofts	a district in southwestern Manhattan noted for its shops and restaurants and galleries and artist's lofts