Can you describe all the nuances and differences between these cards’ meanings?

I sometimes struggle with understanding some of the differences between these cards. Can you help me understand the nuances and subtle (or not subtle) differences between them all?

2 of Wands vs 3 of Wands

8 of Cups vs 6 of Swords

9 of Swords vs 10 of Swords vs 3 of Swords