Englishfor English speakers
confrontation
Noun
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A confrontation between two or more groups is when they challenge or confront each other.
In a tense confrontation, the two men argued with each other.
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A confrontation is a fight between two or more groups armed with weapons.
The battalion was caught up in a confrontation with enemy troops.
clause
Noun
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A clause is a section in a contract or other legal document.
The author's contract contained a clause giving him creative control over the films.
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A clause is a group of words that usually includes a subject and a predicate. In English, the subject usually comes before the predicate.
The last clause in the sentence is hard to understand without knowing some background.