Collocations
- Words that naturally pair: make a decision, do homework, heavy rain, strong coffee.
Word forms
- Change class with suffixes: beauty (n) → beautiful (adj) → beautifully (adv).
- succeed (v) → success (n) → successful (adj).
Key idea
Collocations are natural word pairings (make a decision); word forms change class with suffixes (success/successful).
Remember
Say 'make a decision' and 'do homework' — these pairings are fixed.