The document discusses six types of word formation processes in English: compounding, derivation, affixation, blending, clipping, and acronyms. Compounding forms words from two or more root morphemes like "dog house". Derivation creates new words from roots through changes in parts of speech. Affixation adds morphemes like prefixes and suffixes. Blending combines parts of multiple words to form new words like "smog". Clipping shortens words without changing their meanings. Acronyms make words from the initial letters of phrases.