No, they are not. An example of a sentence is 'There is a man down the lane.' A phrase might be 'man down the lane'.
How words, sentences, and phrases sound together (APEX)
epistrophe
sentences and phrases
"Completez les phrases" in French means "complete the sentences" in English. It is a directive asking someone to fill in the missing parts of incomplete sentences.
sentence parts
Sure, I can help with that! Could you please provide me with the specific phrases or words you would like me to include in the sentences?
Key words and phrases
"écris des phrases" is "write (some) sentences" in French.
The way words, sentences, and phrases sound together
Not always. Sometimes idioms are just phrases.
Your Birthday is on a Sunday next year
Do I begin sentences with "and?" Sometimes. SHOULD one begin sentences with "and?" No. And is a conjunction, which is meant to connect words, phrases, or clauses together. It is not supposed to START a sentence.