The root in English represents the core part of word formation.

Affix refers to adding other letters before or after a word to become a new word.

Second, the role is different:

Affix: can only be attached to the root to form a new word, but can not form its own morpheme. The affix attached in front of the root is called prefix, the affix attached behind the root is called suffix, and the affix inserted in the middle of the root is called infix.

The core part of English word formation lies in the root, and the meaning of words is mainly reflected through the root. Roots can be combined into words alone or together, and the part of speech and meaning of words can be changed through prefixes and suffixes.

Prefix form

Open classification: English, grammar, learning, vocabulary

[Prefix] Appears in the form of a combination, connected with a sound or continuous sound at the beginning of a word, root or phrase, or uses a letter or continuous letter to produce a derivative or variant in writing. In Chinese, it refers to the word-forming elements in front of the root. Such as "a" in "brother" and "aunt"

An English word can be divided into three parts: prefix, root and suffix. The part in front of the root is a prefix. Prefixes can change the meaning of words.

Baidu encyclopedia-etymology