Compound words:
secondhand, notebook, crossroad, crossword, mother-in-law, six-year-old, makeup, laptop; twenty-three; breakthrough; greenhouse; blackboard; mankind, afternoon; classroom; bedroom;
Derivatives:
explain-explanation-explanatory; courage-courageous; dark-darken-darkness; friendly-unfriendly; regret-(un)regretful; avoid-avoidance-unavoidable; (un)happy-(un)happiness; rich-enrich; breathe-breath-breatless; believe-belief-(un)believable; (dis)appear-(dis)appearance; bleed-blood-bloody; attract-attraction-(un)attractive; assist-assistance-assistant