| A | B |
| Intruder | one who enters without permission |
| Intrusive | coming in without being wanted or invited |
| Expel | to force out |
| Expel | to force to leave |
| Extrude | to push out |
| Restrict | to keep within limits; to confine |
| Impel | to force or drive to action |
| Impel | to cause to move forward |
| Constraint | something that restricts or limits |
| Repel | to drive back or keep away |
| Repel | to keep off; to resist |
| Constrict | to make smaller or narrower by pressing together; to squeeze |
| Pulsate | to expand and contract rhythmically; to beat; to throb |