Invent vs Execute - What's the difference?

Invent is a related term of execute.

is that invent is to design a new process or mechanism while execute is .

(en verb)

To design a new process or mechanism.

After weeks of hard work, I invented a new way to alphabetize matchbooks.

To create something fictional for a particular purpose.

I knew I had to invent an excuse, and quickly.

We need a name to put in this form, so let's just invent one.

(obsolete) To come upon; to find; to find out; to discover.

* 1590 , Edmund Spenser, The Faerie Queene , I.vi:

Far off he wonders, what them makes so glad, / If Bacchus merry fruit they did inuent [...].

* fangle * discover

* * 1000 English basic words

(execut)

To kill as punishment for capital crimes.

There are certain states where it is lawful to execute prisoners convicted of certain crimes.

To carry out; to put into effect.

Your orders have been executed , sir!

I'll execute your orders as soon as this meeting is adjourned.

* Milton

Why delays / His hand to execute what his decree / Fixed on this day?

To perform.

to execute a difficult piece of music brilliantly

to execute a turn in ballet

To cause to become legally valid; as, to execute a contract.

(computing) To start, launch or run; as, to execute a program.

* (computing) start, launch, run, open