swastika vs tetraskelion

swastika and tetraskelion both are nouns.

Word	Noun	Adjective	Verb	Adverb
swastika	Yes	No	No	No
tetraskelion	Yes	No	No	No

As nouns, tetraskelion is a hypernym of swastika; that is, tetraskelion is a word with a broader meaning than swastika:

swastika: the official emblem of the Nazi Party and the Third Reich; a cross with the arms bent at right angles in a clockwise direction
tetraskelion: a figure consisting of four stylized human arms or legs (or bent lines) radiating from a center

Other hypernyms of swastika include tetraskele, allegory, emblem.

swastika (noun)	tetraskelion (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	a figure consisting of four stylized human arms or legs (or bent lines) radiating from a center