occupation vs career

occupation and career both are nouns.

Word	Noun	Adjective	Verb	Adverb
occupation	Yes	No	No	No
career	Yes	No	Yes	No

As nouns, career is a hyponym of occupation; that is, career is a word with a more specific, narrower meaning than occupation:

occupation (noun)	career (noun)
the principal activity in your life that you do to earn money	the particular occupation for which you are trained
the act of occupying or taking possession of a building	the general progression of your working or professional life
the control of a country by military forces of a foreign power
any activity that occupies a person's attention
the period of time during which a place or position or nation is occupied

occupation (verb)	career (verb)
	move headlong at high speed