perform, execute, discharge, accomplish, achieve, effect, fulfill mean to carry out or into effect.

perform implies action that follows established patterns or procedures or fulfills agreed-upon requirements and often connotes special skill.

execute stresses the carrying out of what exists in plan or in intent.

discharge implies execution and completion of appointed duties or tasks.

accomplish stresses the successful completion of a process rather than the means of carrying it out.

achieve adds to accomplish the implication of conquered difficulties.

effect adds to achieve an emphasis on the inherent force in the agent capable of surmounting obstacles.

fulfill implies a complete realization of ends or possibilities.