distinguish
The sisters look so similar it's often difficult to distinguish one from the other.
It's not the beauty so much as the range of his voice that distinguishes him from other tenors.他与其他男高音大不相同，并非因为他那华美的声音，而是他宽广的音域。
These crabs are actually a separate species, but it can be hard to distinguish them from other king crabs.

SMART Vocabulary: related words and phrases

Identifying
ascribe something to something
ascription
badged
badging
band
distinguishably
distinguishing
distinguishing feature
ear tag
geotag
microchip
misidentification
misidentify
over-identification
over-identify
passport
pick
stamp
unnameable
unplaceable

You can also find related words, phrases, and synonyms in the topics:

Different and difference