about, approximately
cerca de = around
"Serca" is not a standard Spanish word. It is possible that it is a misspelling or a regional variation of the word "cerca," which means "near" or "close" in English. If you meant "cerca," it is used to indicate proximity or closeness in distance.
Cerca
The word Cerca has two meanings. It can either mean Fenceor Close to/Near.El perro está al otro lado de la cerca.The dog is on the other side of the fence.Estoy parado cerca de mi hermano.I'm standing close to my brother.
Near.
cerca
cerca
Está cerca means "It is close".
Cerca de.
It means "Do you live far or near the university?" in Spanish.
Near. (It is usually used with "de.")
Mi casa queda cerca del océano.Mi casa cerca el oceano
Vaya cerca de....