emblem vs Hakenkreuz

emblem and Hakenkreuz both are nouns.

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

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

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