To what extent were the two world wars distinct and different conflicts and in what ways were they related to each other?

The two world wars were distinct conflicts in terms of their causes, scale, and outcomes; World War I (1914-1918) primarily stemmed from militarism, alliances, and nationalism, while World War II (1939-1945) was driven by unresolved issues from the first war, economic instability, and the rise of totalitarian regimes. However, they were related as the Treaty of Versailles, which ended World War I, sowed the seeds of resentment in Germany, contributing to the rise of Adolf Hitler and the outbreak of World War II. Both wars also involved numerous nations and resulted in significant loss of life, but they differed in their technological advancements and the ideological battles fought, particularly relating to fascism and communism in World War II.