Asset = 资产 Capital = 资本 ... Regarding property, there are many types eg. 地产,房产, 财产, 知识产 (intellectual property). From an accounting & finance point of view, Property is part of Assets. Capital is what the owners of a business put into the business. To illustrate: Joe invested $1mil capital into his new company. Of that, $100,000 was put aside to meet future expenses. $900,000 was used to purchase various assets, of which $700,000 went to buying investment properties and $200,000 to motor vehicles.
The above is in relation to accounting & finance. There are other uses for those words. Eg1. Mark is so hardworking, he's definitely an asset to the company.
Eg2 n many countries, 1st degree murder is a capital offence (ie. punishment is death sentence if caught).
Eg3 Who said you could take my MP3 player? Keep your hands off my property!
Hope this helps.