Upon adoption into Tagalog, a number of Spanish-derived terms underwent a process of semantic shift or change in meaning. A loanword is said to have undergone a semantic shift if its meaning in Tagalog deviates from the original meaning of the word in the source language (in this case, Spanish). A type of semantic shift is the so-called "semantic narrowing", which is a linguistic phenomenon in which the meaning of a Spanish-derived word acquires a less general or inclusive meaning upon adoption into Tagalog. Semantic narrowing occurs when a word undergoes specialization of usage. For example, the word "kuryente" (meaning "electricity" or "electric current") comes from the Spanish word "corriente", which is a general term to refer to any current, whether electric or not. Upon adoption of the word "corriente" into Tagalog as "kuryente", it underwent a semantic narrowing and its usage became restricted to refer only to an electric current, unlike its Spanish counterpart. Another example of a semantic narrowing is the Tagalog word "ruweda" (meaning "Ferris wheel"), a term derived from the Spanish word "rueda" which refers to any kind of wheel. Upon adoption into Tagalog, "ruweda" underwent usage specialization and its meaning became restricted to the Ferris wheel.