know a hawk from a handsaw

To be able to tell two things apart. The phrase comes from Shakespeare's Hamlet. Of course I know which twin is which, I know a hawk from a handsaw, after all!

Common Names:

Name	Pronounced	Usage
Foster (2)	FAWS-tər	English
Clifford	KLIF-ərd	English
Rosmunda	-	Ancient Germanic
Iakobos	-	Biblical Greek
Maike	MIE-kə (German)	Frisian, German
Monika	MO-ni-kah (German), maw-NEE-kah (Polish)	German, Swedish, Norwegian, Danish, Czech, Slovak, Polish, Slovene, Croatian, Lithuanian, Latvian