Basic or core vocabulary: the fundamental, frequently used words learners should acquire first.
日本語学習の初級では基礎語彙を優先して覚えるのが大切だ。
In beginner Japanese study, it's important to prioritize learning core vocabulary.
この教材は基礎語彙を500語に絞って紹介している。
This textbook focuses on introducing 500 core vocabulary items.
基礎語彙が身につくと、リスニングや会話の理解が格段に上がる。
Once you have core vocabulary down, your listening and speaking comprehension improves significantly.