Here's why:
* Linking verbs connect the subject of a sentence to a noun, pronoun, or adjective that renames or describes the subject.
For example:
* "He is a doctor." ("Is" links "He" to the noun "doctor".)
* "She is happy." ("Is" links "She" to the adjective "happy".)
* Conjunctions connect words, phrases, or clauses.
For example:
* "I like apples and oranges." ("And" connects the nouns "apples" and "oranges".)
* "He went to the store, but he didn't buy anything." ("But" connects the two clauses.)
Let me know if you have any other grammar questions!