As adjectives the difference between interstage and interstate
is that interstage is between stages while interstate is (chiefly|us|and|australia) of, or relating to two or more states.
As an adverb interstate is
(chiefly|us|and|australia) crossing states (usually provincial state, but also eg multinational sense).
As a noun interstate is
(us) a freeway that is part of the.
interstate
English
Adjective
(-)
(chiefly, US, and, Australia) of, or relating to two or more states
Adverb
(
-)
(chiefly, US, and, Australia) crossing states (usually provincial state, but also e.g. multinational sense).
-
Noun
(
Interstate Highway System)
(
en noun)
(US) A freeway that is part of the