Thanks guys,
@ Perikles - I totally agree about the subjunctive being a mood and I have tried to research whether the conditional is a tense or a mood so your explanation about verbs was great. From what I found I was under the impression that even grammarians can't agree on whether the conditional is a tense or a mood, for example I read this article leaning towards it being classed as a tense:
The Spanish conditional — although semantically it expresses the dependency of one action or proposition upon another — is generally considered a "tense" of the indicative mood, because, syntactically, it can appear in an independent clause.
@ Alex
Thank you, your examples were very helpful. I'm still trying to get my head around how falling in the river could be intentional jeje but I get the rest