Many words belong to a word family. That is, they form a set of words that have the same root. This is particularly true for academic words – those words that commonly occur in academic text; that is, texts that are about commercial, scientific, legal or cultural topics.
| significance | (abstract noun) |
| significant | (adjective) |
| signify | (verb) |
| insignificant | (negative adjective) |
| significantly | (adverb) |