arbor vs mandrel

arbor and mandrel both are nouns.

Word	Noun	Adjective	Verb	Adverb
arbor	Yes	No	No	No
mandrel	Yes	No	No	No

As nouns, arbor and mandrel are synonyms defined as:

arbor and mandrel: any of various rotating shafts that serve as axes for larger rotating parts

Other synonyms of arbor include mandril, spindle.

arbor (noun)	mandrel (noun)
a framework that supports climbing plants	any of various rotating shafts that serve as axes for larger rotating parts
any of various rotating shafts that serve as axes for larger rotating parts
tree (as opposed to shrub)