practical politics vs politics

practical politics and politics both are nouns.

Word	Noun	Adjective	Verb	Adverb
practical politics	Yes	No	No	No
politics	Yes	No	No	No

As nouns, politics is a hypernym of practical politics; that is, politics is a word with a broader meaning than practical politics:

practical politics: politics based on practical rather than moral or ideological considerations
politics: the study of government of states and other political units

Other hypernyms of practical politics include government, political science.

practical politics (noun)	politics (noun)
politics based on practical rather than moral or ideological considerations	the profession devoted to governing and to political affairs
	the activities and affairs involved in managing a state or a government
	the study of government of states and other political units
	the opinion you hold with respect to political questions
	social relations involving intrigue to gain authority or power