essentials
"Essentials" is a word you will encounter constantly in everyday English. It has a couple of closely related but distinct uses — as a noun referring to things that are absolutely necessary, and as an adjective form you may also see. Here are the most important senses to know.
When something is an 'essential', it means it is so important that you cannot do without it. 'Essentials' (plural) refers to the basic, must-have items or facts that you truly need. Think of it this way: if you were packing for a trip and could only take the most important things, those items would be your essentials.
everyday language · Modern, widely used