cercar
fence
cerca
near
+
-ar
verb suffix
Cercar means to fence and can be thought of as cerca0 (near0) + -ar1 (verb suffix1). It's like making something 'near' by enclosing it with a fence.
verb
- fenceTo enclose or surround with a fence or wallVamos a cercar el jardín para protegerlo. // We're going to fence the garden to protect it.