weighting vs coefficient

weighting and coefficient both are nouns.

Word	Noun	Adjective	Verb	Adverb
weighting	Yes	No	No	No
coefficient	Yes	No	No	No

As nouns, coefficient is a hypernym of weighting; that is, coefficient is a word with a broader meaning than weighting:

weighting: (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance
coefficient: a constant number that serves as a measure of some property or characteristic

weighting (noun)	coefficient (noun)
(statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance	a constant number that serves as a measure of some property or characteristic