lamp vs tornado lantern

lamp and tornado lantern both are nouns.

Word	Noun	Adjective	Verb	Adverb
lamp	Yes	No	No	No
tornado lantern	Yes	No	No	No

As nouns, tornado lantern is a hyponym of lamp; that is, tornado lantern is a word with a more specific, narrower meaning than lamp:

lamp: an artificial source of visible illumination
tornado lantern: an oil lamp with a glass chimney and perforated metal lid to protect the flame from high winds; candlestick with a glass chimney

lamp (noun)	tornado lantern (noun)
an artificial source of visible illumination	an oil lamp with a glass chimney and perforated metal lid to protect the flame from high winds; candlestick with a glass chimney
a piece of furniture holding one or more electric light bulbs