1) Bilingualism :- Fluency in or use of two languages. 2) Trilingualism :- The ability to speak three languages. 3) Multilingualism :- Multilingualism is the use of mire than one language, either by an individual speaker or by a community of speakers. It is believed that multilingual speakers outnumber monolingual speakers in the word's population. I am sad Spanish :- Estoy triste French :- ...