14-decoration(s), illumination(s), education
15-homeless, restless, windless, snowless
16-unhappy, unkind, unreal
17-more interesting, the most interesting; more different, the most different; dirtier, the dirtiest; nicer, the nicest; longer, the longest; hotter, the hottest, fatter, the fattest
18-няня
19-экспедиция
20-путешествовать
21-западный