$XEM (NEM) and $NOT are two different cryptocurrencies with distinct differences:

1. *NEM (XEM)*:

- Launched in 2015

- Focuses on enterprise blockchain solutions

- Uses a proof-of-importance (POI) consensus algorithm

- Has a large maximum supply (9 billion XEM)

- Targets businesses and institutions

2. *NOT*:

- Launched in 2021

- Focuses on decentralized finance (DeFi) and gaming

- Uses a proof-of-stake (PoS) consensus algorithm

- Has a smaller maximum supply (100 million NOT)

- Targets a wider audience, including gamers and DeFi users

These differences reflect distinct use cases, target audiences, and design choices for each cryptocurrency.

Here are some additional insights:

- NEM (XEM) has a stronger focus on security and scalability, making it attractive for enterprise use cases.

- NOT has a stronger focus on community engagement and decentralized governance, making it attractive for DeFi and gaming applications.

- NEM has a more established track record, having been around for longer, while NOT is relatively new and still building its reputation.

- NEM has a larger market capitalization, while NOT has a smaller but still significant user base.

- NEM is listed on more exchanges, making it more widely available for trading.

- NOT has a more active social media presence and community engagement, which can contribute to its growth and adoption.

These insights highlight the different strengths and approaches of each cryptocurrency, which can help inform investment decisions or usage choices