ionization tube vs ionization chamber

ionization tube and ionization chamber both are nouns.

Word	Noun	Adjective	Verb	Adverb
ionization tube	Yes	No	No	No
ionization chamber	Yes	No	No	No

As nouns, ionization tube and ionization chamber are synonyms defined as:

ionization tube and ionization chamber: a measuring instrument that measures the amount of ionizing radiation

ionization tube (noun)	ionization chamber (noun)
a measuring instrument that measures the amount of ionizing radiation	a measuring instrument that measures the amount of ionizing radiation