Complex sentence: The root of both these words is manna, the food supplied to the Israelites during their journey through Arabia, which is the sweet secretion of several trees and shrubs, such as fraxinus ornus.
Split into simpler sentences: The root of both these words is manna, the food supplied to the Israelites during their journey through Arabia. Manna is a sweet secretion of several trees and shrubs, such as fraxinus ornus.