tell apart is a verb meaning "detect with the senses". It carries 2 recorded senses.
detect with the senses
“The fleeing convicts were picked out of the darkness by the watchful prison guards”
“I can't make out the faces in this photograph”
mark as different
“We distinguish several kinds of maple”
Definitions, synonyms and semantic relations for tell apart come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.