Frontend Development Terms:

1. Responsive Design: Designing websites that adapt to different screen sizes and devices.
2. CSS Grid/Flexbox: Layout modules for building responsive and flexible web layouts.
3. Bootstrap/Tailwind CSS: Popular CSS frameworks for building responsive web interfaces quickly.
4. JavaScript Frameworks: Tools like React, Angular, and Vue.js for building interactive user interfaces.
5. Component-Based Architecture: Organizing UI elements into reusable components for better code maintenance.
6. Single Page Application (SPA): A web application that loads a single HTML page and dynamically updates content.
7. Progressive Web App (PWA): A web application that offers features similar to native apps, like offline access and push notifications.
8. Version Control (Git): A system to manage changes to code, often using platforms like GitHub or GitLab.
9. RESTful APIs: Web services that allow frontend applications to communicate with backend service. 

General Development Terms:

1. Agile Development: An iterative approach to software development that emphasizes flexibility and collaboration.
2. User Experience (UX): The overall experience a user has when interacting with a product or service.
3. User Interface (UI): The visual elements through which a user interacts with a product or service.
4. API Integration: Connecting a frontend application with external services or databases using APIs.
5. Continuous Integration/Continuous Deployment (CI/CD): A practice of frequently integrating code changes and deploying them to production.
6. Debugging: The process of identifying and fixing issues in code.
7. Testing (Unit/Integration/End-to-End): Ensuring the application works as expected at different levels (individual components, combined components, and the entire system).
8. Performance Optimization: Techniques used to improve the speed and efficiency of an application.
9. Accessibility: Designing and developing applications that are usable by people with disabilities.
10. Code Review: The practice of reviewing code changes by other developers to ensure quality and consistency.

Cross-Platform Mobile Development Terms:

1. React Native: A popular framework for building cross-platform mobile apps using React and JavaScript.
2. Flutter: Google’s UI toolkit for building natively compiled apps for mobile, web, and desktop from a single codebase.
3. Hybrid Apps: Mobile applications that combine native code with web technologies like HTML, CSS, and JavaScript.