Firstly I would like to introduce the frameworks and their popularity

REACT
React is a popular JavaScript library for building user interfaces created in 2011 by Jordan walker and it is managed by Facebook

It is also important to know react was released as an open source library, and it was firstly named faxJS.

Some of the key concepts of React are as follows

1. Component-based architecture: React uses a component-based architecture, where applications are broken down into small, reusable components.

2. JSX: React uses JSX, a syntax extension that allows you to write HTML-like code in your JavaScript files.

3. Virtual DOM: React uses a virtual DOM (a lightweight in-memory representation of the real DOM) to optimize rendering and updating of components.

4. One-way data binding: React uses a one-way data binding approach, where components only receive updates from their parents, not the other way around.

5. State and props: Components manage their own state, and receive props from their parents.

6. Hooks: React provides hooks, a way to use state and other React features without writing a class component.

7. Popular libraries and tools: React has a large ecosystem of libraries and tools, including Redux, React-router-dom, React-scroll and Webpack.

8. Wide adoption: React is widely adopted in the industry, and is used by companies like Facebook, Instagram, and Netflix.

Some advantages of using React include:

1. Efficient rendering: React's virtual DOM and one-way data binding approach make it efficient for rendering and updating components.
2. Easy to learn: React has a relatively low barrier to entry, and is easy to learn for developers familiar with JavaScript and HTML/CSS.
3. Flexible and customizable: React can be used for a wide range of applications, from small widgets to complex enterprise applications.

Some potential Disadvantages of using React include:

1. Steep learning curve for advanced topics: While React is easy to learn for basic usage, some advanced topics like hooks and context can be challenging to master.

2. Not a full-featured framework: React is a library, not a full-featured framework like Angular or Vue. This means you may need to use additional libraries and tools to build a complete application.

ANGULAR
Angular is a popular JavaScript framework for building web applications. It was created by Google in the year 2010

Here are some key points about Angular:

1. **Full-featured framework: **Angular is a complete framework that includes everything you need to build complex web applications.

2. Modular architecture: Angular uses a modular architecture, where applications are broken down into small, reusable modules.

3. Components: Angular uses components, which are similar to React components, to build user interfaces.

4. Templates: Angular uses HTML templates, which are compiled into JavaScript code.

5. Dependency injection: Angular uses dependency injection to manage dependencies between components and services.

6. Services: Angular provides services, which are singletons that can be used to share data and functionality across components.

7. Routing: Angular provides a built-in routing system for navigating between views.

8. Forms: Angular provides a built-in forms system for handling user input.

9. Observables: Angular uses observables, which are a way to handle asynchronous data streams.

10. TypeScript: Angular is built on top of TypeScript, which provides type checking and other features.

Some advantages of using Angular include:

1. Comprehensive framework: Angular provides everything you need to build complex web applications.

2. Large community: Angular has a large and active community, with many resources available.

3. Enterprise-ready: Angular is widely used in enterprise environments, and is well-suited for large-scale applications.

4. Opinionated: Angular has a strong opinion on how applications should be structured, which can help guide development.

Some potential Disadvantages of using Angular:

1. Steep learning curve: Angular has a complex architecture and a lot of features, which can make it challenging to learn.

2. Verbose: Angular requires a lot of boilerplate code, which can make it feel verbose.

3. Not as flexible as React: Angular has a more rigid architecture than React, which can make it harder to adapt to certain use cases.

Let see some diffence between React and Angular

Here is a table comparing React and Angular:

Now, let see some similarities between React and Angular
Here is a table highlighting some similarities between React and Angular:

From the developer survey

React takes the lead over Angular.