poundage (n.)

• accommodation
• avoirdupois
• beef
• burden
• capacity
• carriage
• cartage
• content
• cordage
• expressage
• fatness
• freight
• freightage
• gravity
• haulage
• heaviness
• heft
• heftiness
• limit
• measure
• net
• overweight
• ponderosity
• ponderousness
• quantity
• room
• space
• stowage
• tonnage
• volume
• weight
• weightiness