laborsaving vs laboursaving

laborsaving and laboursaving both are adjectives.

Word	Noun	Adjective	Verb	Adverb
laborsaving	No	Yes	No	No
laboursaving	No	Yes	No	No

As adjectives, laborsaving and laboursaving are synonyms defined as:

laborsaving and laboursaving: designed to replace or conserve human and especially manual labor

laborsaving (adjective)	laboursaving (adjective)
designed to replace or conserve human and especially manual labor	designed to replace or conserve human and especially manual labor