capillary vs capillary tubing

capillary and capillary tubing both are nouns.

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

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

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

Other synonyms of capillary include capillary tube.

capillary (noun)	capillary tubing (noun)
a tube of small internal diameter; holds liquid by capillary action	a tube of small internal diameter; holds liquid by capillary action
any of the minute blood vessels connecting arterioles with venules

capillary (adjective)	capillary tubing (adjective)
of or relating to hair
long and slender with a very small internal diameter