What is the difference between facilitate and facility?

[Lenay]

Business Idiom in English, Intermediate level

ESL/EFL Test #50 "Computers", question 9

In order to ......... the method by which staff pay is calculated the company has bought a new software package.

(a) facile
(b) facility
(c) factual
(d) facilitate

Business Idiom in English, Intermediate level

ESL/EFL Test #50 "Computers", answer 9

In order to facilitate the method by which staff pay is calculated the company has bought a new software package.

Correct answer: (d) facilitate

Your answer was: incorrect
In order to facility the method by which staff pay is calculated the company has bought a new software package.
_________________________

why is facilitate and don't facility?

Lenay

[Mister Micawber]

.
A verb is required here; the only verb in the list is 'facilitate'.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mister Micawber