Current liabilities are debts that must be repaid within a year.
Current assets are assets with short lives, but inventory is not considered a current asset at times, for example in the quick ratio, inventory is disregarded.
Long-term debts are those that can be paid after a year or more, and not whatever "residual claim" the question speaks of.
Tangible assets are assets which can be felt and have a physical form, but are not necessarily fixed assets.
Net working capital is current assets minus current liabilities.
'The only definiiton that seems correct is the current asset one, although they word it inappropriately.