A root word is a basic standalone word in which affixes (prefixes & suffixes) can be added to create new words. A root is the basis of a word and it typically does not stand alone.
Prefixes and suffixes can be added to a root word to form many new words and change word meaning. Often the term base word is used interchangeably with root word. When affixes are added to them, they serve as the anchor of the word because they hold the word’s principle meaning.
5 root words those are used often, helps to enhance and memorize vocabulary-
1-Auto- Self
Examples–
Autograph– signature written by a person her ‘self’
Automobile– car that moves by it ‘self’
Autofocus– a camera function where it focuses it ‘self’
Autonomous– of rule by the ‘self’
2-Bene- good
Examples–
Benevolent– kind-hearted
Beneficial-resulting in good; advantageous
Beneficent-generous
Benefit– Profit
3-Multi- many
Examples–
Multicolored– including many colors
Multifaceted– having many aspects or sides
Multi- farious-of many and various kinds
Multiple– containing more than one
4-Form- shape
Examples–
Deformed– out of shape
Cruciform– shaped like a cross
Transform– shape across
Malformed– badly shaped
5-Cred- believe
Examples–
Incredible– not to be “believed”
Credit– state of being “believed”
Credulous– too easily “believing” something
Accreditation– process of ascertaining “belief” or “trust” what a school says it does
https://peptalkindia.com/how-to-build-vocabulary-using-collocations/