This document discusses suffixes such as -ous, -sion, -ion, and -ation and how they can change words. Adding -ation, -ion, or -sion can change a verb into a noun. Adding -ous can change a noun into an adjective. When adding suffixes, the spelling of some base words may change by dropping or changing a final e or y. Examples are then given of words with different suffixes and their meanings.