What is the difference between quantifier and numeral?

e.g. one, two, three.....
Are they numerals or quantifiers?

We usually refer to one, two, three as numerals or numbers. They also act as quantifiers -- although I've rarely heard that term used for them.

The terms "quantifier" and "numeral" are often used in the field of linguistics to describe different types of words that express quantity or number.

A numeral is a word or group of words that represents a specific number or quantity. In English, words like "one," "two," "three," and so on are considered numerals. Numerals are used when we want to convey a precise quantity or when we want to count or enumerate something.

A quantifier, on the other hand, is a word or phrase that gives an approximate or general indication of quantity. Common quantifiers in English include "some," "many," "few," "several," "all," and "most." These words don't provide an exact number but rather give an idea of how much or how many of something exists.

So, to answer your question, words like "one," "two," "three," etc. are numerals because they represent specific numbers. Quantifiers, on the other hand, give a general indication of quantity rather than a precise number.