| Term | Definition |
| consist | to be made up of; to be formed |
| consistent | constant; remaining the same |
| insist | to demand; to require |
| insistence | the act of holding firmly to a demand |
| insistent | firm; holding to a demand |
| exist | to be real; to have life |
| existence | life; actuality; being |
| resist | to oppose; to stand firmly against |
| resistance | opposition; the act of standing against |
| resistant | opposing; standing against |
| resistible | capable of being refused; able to be withstood |
| irresistible | not capable of being refused or withstood |
| assist | to aid; to help |
| assistance | help; aid |
| assistant | a person who helps or aids |
| persist | to continue firmly; to endure; to last |
| persistence | perseverance; steadfastness; determination |
| persistent | not giving up; continuing on |
| subsist | to keep alive on; to live on |
| desist | to stop; to cease |
| sistere, sist | to stop; to stand |