This is the 408th most frequent Romanian word.
copil
Child.
Here, 'copil' is used in its singular form and definite articulation 'copilul' to refer to a specific child.
Copilul aleargă prin parc.
The child is running through the park.
Here, 'copil' is in its singular form and indefinite articulation 'un copil' indicating an unspecified child.
Am văzut un copil pe stradă.
I saw a child on the street.
Here, 'copil' forms part of the noun 'copilăria', derived from 'copil', referring to the period of being a child.