Hakenkreuz vs emblem

Hakenkreuz and emblem both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hakenkreuz	Yes	No	No	No
emblem	Yes	No	No	No

As nouns, emblem is a hypernym of Hakenkreuz; that is, emblem is a word with a broader meaning than Hakenkreuz:

Hakenkreuz: the official emblem of the Nazi Party and the Third Reich; a cross with the arms bent at right angles in a clockwise direction
emblem: a visible symbol representing an abstract idea

Other hypernyms of Hakenkreuz include tetraskele, tetraskelion, allegory.

Hakenkreuz (noun)	emblem (noun)
the official emblem of the Nazi Party and the Third Reich; a cross with the arms bent at right angles in a clockwise direction	special design or visual object representing a quality, type, group, etc.
	a visible symbol representing an abstract idea