Cases of word usage

1) to keep (oneself, a person, speech etc) within limits (confine)

2) the consciousness within oneself of the choice one ought to make between right and wrong (conscience)

3) to have or hold things within itself (contain)

4) a part of a country wholly within the boundaries of another (enclave)

5) a government tax on certain goods manufactured, sold or used within a country (excise)

6) a division of animals or plants within a family (genus)

7) limited; (of an opinion, a desire, feelings etc) in the middle within reasonable limits (moderate)

8) the right or power to choose; something that is or may be chosen; the right to buy and sell at a certain price within a certain period of time (option)

9) a sentence or phrase within another sentence, marked off by commas, dashes or brackets; round brackets () for this (parenthesis)

10) (the use of) an apparatus that shows on a screen (by means of radio echoes) solid objects that come within its range (used by pilots etc) (radar)