| A | B |
| courteous | a person who is polite and considerate of others |
| rude | a person who is not polite and does not think of others |
| partner | someone who works with a person in an equal way; an ally |
| opponent | someone who competes, fights, or takes an opposite position |
| plentiful | there is more than enough of it |
| scarce | there is not enough of it |
| sensible | to show good judgement or to make sense |
| ridiculous | is silly or makes no sense |
| initiate | to begin |
| terminate | to end |
| gracious | synonym for courteous |
| comrade | synonym for partner |
| abundant | antonym of scarce |
| prudent | antonym of ridiculous |
| inaugurate | synonym for initiate |