root words: taga- + ilog
(natives living by the river)
Tagalog refers to a people and to their language.
1. The Tagalogs (the Tagalog people) live in Manila and nearby areas.
2. The Tagalog language is the basis of the Filipino national language.
When you ask a native of the Philippines what the country's official language is, the answer will be "Filipino." This is because the constitution says so and that is what is taught in the schools.
A foreigner who says that the Philippine national language is "Tagalog" will offend Filipinos from other parts of the country where Tagalog is not the first language.
Educated Filipinos are very finicky about making a distinction between the Tagalog language and the Filipino language. They will even give you examples. A Tagalog sentence has few borrowings from English and Spanish, while a Filipino sentence liberally uses English- and Spanish-derived words.
Marunong ka bang mag-Tagalog?
Do you know how to speak Tagalog?
Misspellings that annoy Filipinos: