remedy

nouns

act of correcting an error or a fault or an evil
redress, remediation, remedy
is derived from
remedial
a medicine or therapy that cures disease or relieve pain
curative, cure, remedy, therapeutic
is derived from
remedial

verbs

set straight or right
"remedy these deficiencies"; "rectify the inequities in salaries"; "repair an oversight"
amend, rectify, remediate, remedy, repair
provide relief for
"remedy his illness"
relieve, remedy