What is the difference between Polkadot and Polkastarter?

Can you please clarify the distinction between Polkadot and Polkastarter? I understand that both are involved in the blockchain and cryptocurrency space, but I'm unsure of their unique features and how they differ from each other. Polkadot, for instance, is often mentioned as a decentralized network that aims to interconnect various blockchains, while Polkastarter seems to be focused on initial dex offerings. Can you elaborate on these differences and perhaps provide some examples to further illustrate their respective roles in the crypto ecosystem?