[nstj]

You're spot on, and this is a bit of an issue - there are a huge number of cross purposes in economic definitions, and the word "capital" is one of them.

My personal take on the word (informed by the dictionary source I gave above and a rather pragmatic approach to economics) is that "capital is stuff". Typically this "stuff" is in the form of either physical goods (lumber, food, concrete, gold, etc) and services (and I know services can't really be 'physical' but I can have a reasonable claim on the labour of someone through prepayment of salary, or a labour contract, etc); or financial assets (such as bank balances, stocks, bonds, etc).

Ultimately though, the "financial capital" is just a slightly divorced claim on the physical capital, and all anyone really cares about is the real stuff which they can eat or build with or develop, etc. You might have a big bank balance, but all you really care about is what you can ultimately cash it in for.