Cases of word usage

1) giving information how, when, where about a verb, such as happily, today, well, as in smile happily, come today, feel will (adverb)

2) the state of being unable to feel pain, heat (anaesthesia)

3) to make (a person, animal) unable to feel pain etc (anesthetize)

4) a living thing that can feel and move about (animal)

5) to feel sure of the truth of (something, that a person is honest etc) (believe)

6) (of talk, behaviour, work etc) causing a person to lose interest and feel tired (boring)

7) (of air, wind, exercise) making one feel active and healthy (bracing)

8) a substance in a coffee, tea etc that causes a person to be more awake, feel more energetic etc (and often used in medicines) (caffeine)

9) causing a person to feel happier, encouraged etc (cheering)

10) to make (a person) feel uncertain, puzzled etc (confuse)