laboursaving vs laborsaving

laboursaving and laborsaving both are adjectives.

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

As adjectives, laboursaving and laborsaving are synonyms defined as:

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

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