(an instance of) the avoidance of waste of money, supplies, strength or anything else of value

saving, frugality

(an instance of) serious suffering; difficult conditions

personal burden

careful thought or planning in advance (especially about money)

caution

severity

severity

strict enforcement (of rules etc); harsh; severe conditions

strictness, exactness

the quality of being severe

asperity

self-control in speech, behaviour and (especially) in the use of alcoholic drink; the state of not drinking any alcoholic drink

self-restraint; abstinence

care, economy, in the use of money or goods

economy