upkeep
1. [ noun ] activity involved in maintaining something in good working order
Synonyms: maintenance care
Examples:

"he wrote the manual on car care"

Related terms: repair overhaul pump_priming camera_care scheduled_maintenance steam_fitting car_care save
2. [ noun ] the act of sustaining life by food or providing a means of subsistence
Synonyms: sustentation sustainment maintenance sustenance
Examples:

"they were in want of sustenance" "fishing was their main sustainment"

Related terms: support sustain