ionization chamber vs ionization tube

ionization chamber and ionization tube both are nouns.

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

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

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

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