local street vs local road

local street and local road both are nouns.

Word	Noun	Adjective	Verb	Adverb
local street	Yes	No	No	No
local road	Yes	No	No	No

As nouns, local street and local road are synonyms defined as:

local street and local road: a street that is primarily used to gain access to the property bordering it

local street (noun)	local road (noun)
a street that is primarily used to gain access to the property bordering it	a street that is primarily used to gain access to the property bordering it