duplicate ratio
matched
same
Doppelganger
Janus-like
Photostat
Xerox
Xerox copy
actual thing
alike
all one
all the same
ambidextrous
analogous
bifacial
bifold
biform
bilateral
binary
binate
biparous
bivalent
carbon
carbon copy
clone
come again
companion
comparable
conduplicate
conduplication
consubstantial
copy
copying
correspondent
corresponding
counterpart
dead ringer
disomatous
ditto
do a repeat
do again
do over
double
double-faced
doubling
dual
dupe
duple
duplex
duplication
agree
artefact
artifact
check
correspond
fit
gibe
jibe
match
reproduce
tally
duplicated
duplicates
duplicating
/etc/fstab
archival
downloadable
four-page
full-length
gravimetric
handwritten
master key
numeric
removable
secure
unframed
water-tight