Few and Small number

Few adjective - A quantifier that can be used with count nouns and is often preceded by `a'; a small but indefinite number.

Small number is a synonym for few in assorted topic. In some cases you can use "Small number" instead the word "Few" as a pronoun or a noun or an adjective, when it comes to topics like scarcely any.

Few is a synonym for small number in assorted topic. You can use "Few" instead the phrase "Small number" as a noun or an adjective or a pronoun, if it concerns topics such as small quantity.