My car is making a knocking noise?

I'm by no means a mechanic or am I really car savy at all so I'm looking some advice on what this could possibly be.

I recently bought a 2005 Honda CRV with 107k miles on it. I noticed recently that when I give the car a lot of gas while at a dead stop I hear a knocking noise that seems to be coming from the front end underneath the car. The knocking stops once I'm done accelerating. The knocking DOES NOT occur when I'm sitting idle or if I rev the engine while in park. If I do not give it a lot of gas while at a dead stop the knocking does not happen. It only occurs when at a dead stop.

Any advice or input on what this could be?

Most likely slop in the timing chain or worn tensioners and guides

with no load on the engine the slop appears, just drive it -- Hondas last forever

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