| Term | Definition |
| ameliorate | become better, make better, improve |
| amelioration | improvement |
| conserve | keep from waste, loss, or decay |
| conservation | preservation from loss, injury or waste |
| conservationist | one who advocates the conservation of natural resources |
| detriment | injury, damage, or something that causes it |
| detrimental | harmful,damage |
| exotic | introduced from another country |
| folly | lack of good sense |
| formerly | in an earlier period |
| former | previous |
| harmony | peaceable, or friendly relations |
| harmonious | friendly |
| ignore | refuse to take notice |
| ignoramus | ignorant, stupid person |
| impediment | something that hinders |
| impede | interfere with or slow the progress of |
| indolent | disposed to avoid exertion |
| indolence | laziness |
| intact | untouched |
| invalid | not binding in law, having no force |
| invalidate | abolish |
| invalid | sickly or disabled person |
| noncarcinogenic | not producing |
| parsimonious | unduly sparing in the spending money |
| parsimony | stingness |
| raze | destroy utterly by tearing down |
| reticent | inclined to be silent |
| reticence | restraint in communicating |
| retire | withdraw from active duty or buisness |
| retort | answer |
| subvert | overturn or overthrow from a foundation |
| subversion | sabotage |
| tractable | easily led, taught, or controlled |
| tractability | obedience |