| A | B |
| exclaim | say suddenly with strong feeling |
| exclamation | interjection |
| detain | hold back |
| detention | keeping in custody |
| comprehend | understand |
| comprehension | ability to get the meaning |
| intrude | force oneself in |
| intrusion | coming unasked and unwanted |
| ferocious | fierce |
| ferocity | savage cruelty |
| sustain | keep going |
| sustenance | nourishment |
| pertain | connected as a part |
| pertinent | to the point |
| commit | pledge; do or perform |
| commission | percentage of amount of business done |
| recede | move backward |
| recession | period of temporary business reduction |
| invade | enter as if to take posession |
| invasion | entering by force as an enemy |