Pug vs Spring: What are the differences?

# Introduction
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Your task is to perform the following actions:
- Format everything as Markdown code that can be used in a website.
- Provide the Key differences between Pug and Spring . Be specific
- Differences should not be more than 6. Be specific.
- Each difference should be in a single paragraph
- Extract and remove generic/declarative sentence
- Subheadings must be bold and in number points not bullet points
- Summary should be in one line only

1. Syntax: Pug uses indentation-based syntax for writing HTML, making the code more concise and cleaner. In contrast, Spring uses XML configurations for defining beans and managing dependencies, which may result in more verbose code compared to Pug.

2. Language: Pug is based on JavaScript while Spring is a Java-based framework. This difference in underlying languages can impact aspects such as the ecosystem, tooling, and the community support available for each platform.

3. Templating vs. Framework: Pug is a templating engine used mainly for generating HTML while Spring is a comprehensive framework for building enterprise Java applications. This difference determines the scope and features provided by each platform.

4. Client-side vs. Server-side: Pug operates on the client side, executing in the browser to render HTML, whereas Spring is typically used on the server side, handling business logic and data processing in a Java environment. This distinction affects where and how the code is executed.

5. Dependency Injection: Spring is known for its robust dependency injection capabilities, enabling loose coupling between components to enhance modularity and testability. In contrast, Pug focuses on providing a concise and readable syntax for generating HTML, with less emphasis on dependency management.

6. Community and Ecosystem: The Pug community primarily revolves around front-end development tools and frameworks, while Spring has a vast ecosystem dedicated to enterprise Java applications, spanning various domains such as cloud computing, microservices, and data processing.

In Summary, Pug and Spring differ in syntax, underlying language, usage scope, execution environment, dependency management, and community focus.