1. This vocabulary starts with 'B'
2. It is usually used when brothers and sisters fight with words
3. It's like an argument
4. A. Hey~ this is mine
B. No! this is mine!
What is that word? vocabulary? I knew it, but I can't remember now please tell me
Thank you in advance
I agree. 'Bicker' is the best word to fit here.
But note that 'bicker' is a <em>word. </em>It is not *'a vocabulary'.
The word 'vocabulary' cannot be used in the way that you are trying to use it in your question. 'Vocabulary' is uncountable, and it means a set of words. Your own 'vocabulary' can be big or small, wide or narrow, depending on how many words you know in a language. You might want to expand your vocabulary, or improve your business-related vocabulary. It can't be used to refer to a single word, however. A word is an item of vocabulary in the same way as a ring or necklace is an item of jewellery.
I would guess "bicker" which means to fight or squabble.
it's definitely "bitch"
Thank you so much ^^