Taṇhā: Craving
The thirst that grows sharper the more it drinks. His eye "is not satisfied with riches" because an eye was never the kind of thing a heap of gold could fill; every load he adds only stretches the appetite he hoped it would quiet. Chase the horizon of "enough" and it keeps stepping back, one more field, one more coin, and the resting place he works toward never comes any closer.
Upādāna: Clinging
Grasping that closes the fist and cannot open it again. He "bereaves his soul of good," clamping the pile so hard that his own hand is refused a single meal from it, guarding the store while he starves an arm's length away. A fist shut tight around coins can neither spend them nor take hold of anything warmer, so the very grip that keeps the gold keeps out every good thing beside it.
Dukkha: Suffering
The friction of a life that never gets to sit down. His toil is "sore travail," a grinding that wears out the body and still buys no rest, because the same wanting that drives the work will never once call it finished. Picture a wheel turning and turning under its load while the cart it belongs to never arrives anywhere.
Anicca: Impermanence
"Vanity" here sits closer to vapor, the small cloud of breath you see on a cold morning and then lose. Everything he stacks up shares that nature, solid-looking for a moment and already thinning back into air, so the riches he cannot stop gathering were slipping through his hands the whole time he gripped them. Build a life on breath and there is nothing underneath the weight to keep it standing.
Yoniso manasikāra: Wise attention
The turn of mind that pauses to ask where all this is heading. He "saith not, For whom do I labour," and that missing question is the whole trouble, since the work rolls on unexamined like a light left burning in an empty house. Put the plain question to it and the driven getting begins to loosen, because this kind of striving lives only as long as no one stops to look straight at it.