job与work 都有“工作”之意,使用中如何掌握?如题.

work:(u n) A very general one.
job:(c n) Any sort of gainful regular employment whether
permanent or temporary.
He had a good jog in a bank.
profession: It suggests a position that can't be gained without a considerable amount of higher
education.
It implies intellectual work, scholarship and mainly refers to three learned professions-law, medicine
and theology.
What do you think of the profession to be a teacher?
occupation: What he is engaged in, either continuously or temporarily, for any purpose, whether of
profit of amusement, learning.
Can you find occupation suitable for his abilities.
employment:(u n) What one is doing, work done in service of another in order to make a living or get
pay./temporary business,
The government gives some money to the worker out of employment.
vocation:(c n) A job which one does because one thinks one has a special fitness or ability or sense
of duty.
It suggests the people do it in order to help others not for the earning of a livelihood. teaching and
nursing. Teaching children ought or be a vocation as well as a way of earning money.
position:(fml) A job, post, usually involving professions managerial or clerical work, not manual.
She got a position as a governess.
He lost his position as steward.

WORK可以做动词,一般作动词用,JOB不可以作动词,它只是名词.