Final answer:
Condolence is an expression of sympathy, while salutation is a form of greeting. Colloquial language is informal and conversational.
Explanation:
Expression of Sympathy, Greetings, and Colloquial Language
Condolence is an expression of sympathy towards someone who is experiencing sorrow or loss. It conveys heartfelt feelings of compassion and support. On the other hand, salutation is an expression of greeting, often used in informal conversations to start or end a communication. When language is colloquial, it is casual, conversational, and characteristic of informal speech.
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