throw stick vs throwing stick

throw stick and throwing stick both are nouns.

Word	Noun	Adjective	Verb	Adverb
throw stick	Yes	No	No	No
throwing stick	Yes	No	No	No

As nouns, throw stick and throwing stick are synonyms defined as:

throw stick and throwing stick: a curved piece of wood; when properly thrown will return to thrower

Other synonyms of throw stick include boomerang.

throw stick (noun)	throwing stick (noun)
a curved piece of wood; when properly thrown will return to thrower	a curved piece of wood; when properly thrown will return to thrower
	a device resembling a sling that is used in various primitive societies to propel a dart or spear