saving

nouns

an act of economizing; reduction in cost
"it was a small economy to walk to work every day"; "there was a saving of 50 cents"
recovery or preservation from loss or danger
"work is the deliverance of mankind"; "a surgeon's job is the saving of lives"
the activity of protecting something from loss or danger

adjectives

bringing about salvation or redemption from sin
"saving faith"; "redemptive (or redeeming) love"
characterized by thriftiness
"wealthy by inheritance but saving by constitution"- Ellen Glasgow
is similar to
careful and diligent in the use of resources