trauma vs blunt trauma

trauma and blunt trauma both are nouns.

Word	Noun	Adjective	Verb	Adverb
trauma	Yes	No	No	No
blunt trauma	Yes	No	No	No

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

trauma: any physical damage to the body caused by violence or accident or fracture etc.; the condition of an injury
blunt trauma: injury incurred when the human body hits or is hit by a large outside object (as a car)

trauma (noun)	blunt trauma (noun)
an emotional wound or shock often having long-lasting effects	injury incurred when the human body hits or is hit by a large outside object (as a car)
any physical damage to the body caused by violence or accident or fracture etc.; the condition of an injury