The word ‘and’ is quite commonly used in English grammar. It is a coordinating conjunction that connects words, phrases, or clauses. When you want to add one idea to another, you typically use ‘and’ to do so. For instance, in the sentence ‘I like coffee and tea,’ the word ‘and’ properly joins the two objects of liking.
From a grammatical standpoint, ‘and’ is essential for clarity and flow in writing. Using it correctly ensures that your sentences are understood as you intend. So, to answer the question, yes, ‘and’ is not only proper grammar, it is an integral part of English sentence construction.