capillary tubing vs capillary tube

capillary tubing and capillary tube both are nouns.

Word	Noun	Adjective	Verb	Adverb
capillary tubing	Yes	No	No	No
capillary tube	Yes	No	No	No

As nouns, capillary tubing and capillary tube are synonyms defined as:

capillary tubing and capillary tube: a tube of small internal diameter; holds liquid by capillary action

Other synonyms of capillary tubing include capillary.

capillary tubing (noun)	capillary tube (noun)
a tube of small internal diameter; holds liquid by capillary action	a tube of small internal diameter; holds liquid by capillary action