Europol vs police

Europol and police both are nouns.

Word	Noun	Adjective	Verb	Adverb
Europol	Yes	No	No	No
police	Yes	No	Yes	No

As nouns, police is a hypernym of Europol; that is, police is a word with a broader meaning than Europol:

Europol: police organization for the European Union; aims to improve effectiveness and cooperation among European police forces
police: the force of policemen and officers

Other hypernyms of Europol include constabulary, law, police force.

Europol (noun)	police (noun)
police organization for the European Union; aims to improve effectiveness and cooperation among European police forces	the force of policemen and officers

Europol (verb)	police (verb)
	maintain the security of by carrying out a patrol