burial vs concealment

burial and concealment both are nouns.

Word	Noun	Adjective	Verb	Adverb
burial	Yes	No	No	No
concealment	Yes	No	No	No

As nouns, concealment is a hypernym of burial; that is, concealment is a word with a broader meaning than burial:

Other hypernyms of burial include concealing, hiding.

burial (noun)	concealment (noun)
concealing something under the ground	the activity of keeping something secret
the ritual placing of a corpse in a grave	a covering that serves to conceal or shelter something
	the condition of being concealed or hidden