argument (noun)
Meaning - an exchange of diverging or opposite views, typically a heated or angry one.
Example of using it in a sentence "I’ve had an argument with my father"
Synonyms: quarrel, disagreement, squabble, fight, dispute, wrangle, clash, altercation, feud, dissension
It can also mean – a reason or set of reasons given in support of an idea, action or theory.
Example of using it in a sentence "there is a strong argument for submitting a formal appeal"
Synonyms: reasoning, logic, case, defence, justification, vindication, explanation, declaration, claim, plea, contention
Use the word as many times throughout the week as you can. This can be verbally, in your written work or listen out for other people using it.