"duplicates" in the noun sense
1. extra, duplicate
something additional of the same kind
"he always carried extras in case of an emergency"
2. duplicate, duplication
a copy that corresponds to an original exactly
"he made a duplicate for the files"
"duplicates" in the verb sense
1. duplicate, reduplicate, double, repeat, replicate
make or do or perform again
"He could never replicate his brilliant performance of the magic trick"
2. twin, duplicate, parallel
duplicate or match
"The polished surface twinned his face and chest in reverse"
make a duplicate or duplicates of
"Could you please duplicate this letter for me?"
4. double, duplicate
"The population doubled within 50 years"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License