Sentence:  I think we can <WSD>afford</WSD> the extra hour it will take.  We can only <WSD>afford</WSD> to buy a small car at the moment. 
Meaning of the word marked with <WSD> tags:  To incur, stand, or bear without serious detriment, as an act which might under other circumstances be injurious;&mdash;with an auxiliary, as can, could, might, etc.; to be able or rich enough.