siderosis vs pneumonoconiosis

siderosis and pneumonoconiosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
siderosis	Yes	No	No	No
pneumonoconiosis	Yes	No	No	No

As nouns, pneumonoconiosis is a hypernym of siderosis; that is, pneumonoconiosis is a word with a broader meaning than siderosis:

siderosis: fibrosis of the lung caused by iron dust; occurs among welders and other metal workers
pneumonoconiosis: chronic respiratory disease caused by inhaling metallic or mineral particles

Other hypernyms of siderosis include pneumoconiosis.

siderosis (noun)	pneumonoconiosis (noun)
fibrosis of the lung caused by iron dust; occurs among welders and other metal workers	chronic respiratory disease caused by inhaling metallic or mineral particles