A piece of metal or paper used as a measure of value in a monetary system and accepted as a means of payment.

Alinunua mkate kwa sarafu tano.
— He bought bread with five coins.
Watoto walichanganya sarafu zao ili kununua zawadi kwa mwalimu wao.
— The children combined their coins to buy a gift for their teacher.
A specific type of currency of a particular country, for example Kenyan currency, Tanzanian currency, etc.
Nilibadilisha dola kuwa sarafu ya Tanzania kabla ya kusafiri.
— I exchanged dollars for Tanzanian currency before traveling.
Biashara hii haikubali sarafu za kigeni.
— This business does not accept foreign currency.