actual thing
carbon copy
co-walker
copy
dead ringer
ditto
double
doubleganger
duplicate
equivalent
etheric double
exact counterpart
facsimile
fetch
homograph
homonym
homophone
idem
identical same
no other
none other
replica
selfsame
spit and image
spitting image
synonym
the same
the same difference
twin
very image
very same
wraith