chalk and cheese

Two objects that although appearing to be similar are in fact different. Just as certain varieties of crumbly white cheese might at first glance resemble chalk, so for example, siblings who resemble each other might have completely different personalities. They would be said to be as different as chalk and cheese.

Common Names:

Name	Pronounced	Usage
Marylou	mer-ee-LOO, mar-ee-LOO	English
Ludoviko	loo-do-VEE-ko	Esperanto
Sara	SAH-rah (Spanish, Finnish, Dutch, Polish), ZAH-rah (German), SER-ə (English), SAR-ə (English), SAH:-rah (Arabic)	Greek, Spanish, Italian, Portuguese, Catalan, Swedish, Norwegian, Danish, Icelandic, Finnish, German
Avrum	-	Yiddish
Rigby	RIG-bee	English (Rare)
Aleksej	-	Slovene