| A | B |
|---|
| baker's dozen | 13 |
| bicentennial | 200th anniversary |
| brace | two of a kind |
| centenarian | one who is 100 years or older |
| centennial | 100th anniversary |
| decade | period of 10 years |
| decathlon | track-and field contest consisting of 10 events |
| decimate | destroy 10% or large portion of |
| dichotomy | division of two |
| fathom | measure of water depth equaling six feet |
| fartnight | period of 14 days |
| millennium | 1000 years |
| nonagenarian | person in his/her 90's |
| octogenarian | person in his/her 80's |
| sexagenarian | person in his/her 60's |
| plurality | victor's margin over the runner-up when no canidate has a majority of the votes |
| quadrennial | occuring or being done every 4 years |
| quadruped | four-footed animal |
| score | group of 20 |
| septuagenarian | person in his/her seventies |
