賦性 is read as ふせい (fusei) and means nature.
ふせい
fusei
ふか
levy
ふかつ
activation
ふぜい
taxation
ふよ
being endowed with (e.g. a gift)
ふぞんりょう
reserves (of oil, natural gas, etc.)
ふぞん
existence (of natural resources)
ふけいざい
excipient (inactive ingredient added to a drug)
ぶばらい
payment on an installment system
いせい
isomerism
さんせい
acidic
まんせい
chronic (illness)
そせい
provenance