-recognise word class
-ment (nouns) e.g. development, environment
-ity (nouns) e.g. responsibility, prosperity, stability, stupidity
-hood (abstract nouns) e.g. childhood, manhood
-ship (abstract nouns) e.g. hardship
-ive (adjectives) e.g. creative, alternative, comprehensive, qualitative
-less (adjectives) e.g. careless, brainless, clueless, endless
-al (adjectives and nouns) e.g. comical, cultural, historical, sexual, anal
-ify (verbs) e.g. amplify, beautify, clarify, dehumidify, intensify