* Compounding: This is the most common and general term for creating new words by combining two or more existing words. Examples: "smartphone" (smart + phone), "sunrise" (sun + rise).
* Blending: This involves combining parts of two words to create a new one. Examples: "smog" (smoke + fog), "brunch" (breakfast + lunch).
* Portmanteau: This is a specific type of blending, where the new word is created by merging the beginning of one word with the end of another. Examples: "spork" (spoon + fork), "ginormous" (gigantic + enormous).
* Acronym: This is a word formed from the first letters of a phrase or name. Examples: "NASA" (National Aeronautics and Space Administration), "NATO" (North Atlantic Treaty Organization).
* Abbreviation: This is a shortened form of a word or phrase. Examples: "TV" (television), "ATM" (automated teller machine).
* Derivation: This refers to creating new words by adding prefixes or suffixes to existing words. Examples: "unhappy" (un + happy), "teacher" (teach + er).
* Neologism: This is a general term for any newly coined word or phrase.
The best word to use will depend on the specific way you are creating new words and the type of words you are creating.