Learn English – “To back” vs. “to back up” in meaning of “to support”

Formally, we use accuse with an act—we assert that somebody did something reprehensible:

Mary accuses John of failing to lock the door.

But we use blame with the outcome—we assert somebody's responsibility for the undesirable result:

Mary blames John for the robbery. OR
Mary blames the robbery on John.

Informally, however, these distinctions often blur. For instance, if the robbery has already been mentioned, blame may very easily take a for clause which explains why the target is blamed:

Mary's house has been robbed. Mary blames John, for failing [=because he failed] to lock the door.

And accuse may take a complement which expresses a state rather than an act:

Mary accuses John of being responsible for the robbery.

Personally, I wouldn't do either; I light a candle.

Kindle is a slow process, like when you're starting a fire in a fireplace. Kindling is little bits of wood or other material that you feed to the fire to get it going. Personally, it sounds weird to me if you're not talking about something like a wood fire.

Ignite is quick. If lightning hits something and sets it on fire, it was ignited, not kindled. You can ignite gas, but not kindle it.

Both of these words have metaphorical uses which similarly are different in the implied speed of the action. Someone's work might kindle interest in a subject while a controversial comment by a politician ignites debate.