Все очень просто:
A journalist is someone who report the news
A nurse is someone who look after sick people
A carpenter is someone who make wooden furniure
A DJ is someone who play records on the radio
A sekretary is someone who type letters and answer the phone
A hairdresser is someome who cut hair
A fashion designer is someone who design clothes
An accountent is someone who keep financial accounts
An architect is someone who design buildings