Romanian word costa comes from Latin sto, Latin con-, and later Italian costare ((intransitive) to cost.)

Detailed word origin of costa

Dictionary entry	Language	Definition
sto	Latin (lat)	(Medieval Latin) I [currently] am (feel). (Medieval Latin) I am [located at]. I stand. I stay, remain.
con-	Latin (lat)	Used in compounds to indicate a being or bringing together of several objects. Used in compounds to indicate the completeness, perfecting of any act, and thus gives intensity to the signification of the simple word.
com-	Latin (lat)
consto	Latin (lat)	To agree, correspond, fit. To be certain, decided, agreed upon, consistent. To consist, to be composed of. To cost. To stand still; to remain the same; stand firm. To stand together.
costare	Italian (ita)	(intransitive) to cost.
costa	Romanian (ron)	To cost.

Words with the same origin as costa