Question

“Work” and “job” are two words that have similar yet different meanings.

A job refers to a specific role/position. Work refers to activities/effort. In another sense “work” can mean the place/company where your job is located.

• I’m looking for a new job. = I’m looking for a new position.
• I’m busy – I have a lot of work.

 

apply for a job: 

I’ve applied for several jobs without success.

get a job: 

Andy got a holiday job at a factory in Bristol.

find a job: 

Emma finally found a job in a bakery.

offer someone a job: 

My son has been offered a job in Tokyo.

 

“Work” is a general term that refers to all activities that one does while “job” is more specific.
 

• I’m busy – I have a lot of work. 
• I start work at 8 o’clock every morning.
• I go to work by bus.
• I know you’ve got a lot of work to do.
• I started work when I was sixteen.

 

Career - a job or series of related jobs that you do, especially a profession that you spend a lot of your working life in.

career in: 

A career in computer science.

career as: 

He has just started out on a career as a photographer.

launch a/your etc career: 

The 25-year-old actress is now launching her career over here.

 

Employment means you are being regularly paid by a person or organization for ongoing work. A job is more likely to be short term while employment is usually expected to last longer.