Here are some key points about bilingualism:
* Fluency: It's not just about knowing words, but about being able to understand, speak, read, and write in both languages.
* Proficiency: Bilingualism can range from basic conversational skills to a near-native level of fluency.
* Balance: It's not always an equal level of proficiency in both languages. One language might be stronger than the other.
* Acquisition: Bilingualism can be acquired through various ways:
* Simultaneous bilingualism: Learning two languages from early childhood.
* Sequential bilingualism: Learning a second language after acquiring the first.
Essentially, being bilingual means being able to effectively communicate in two different languages. It's a valuable asset in today's globalized world.