Themes includes the designs and stylings while plugins provide the functionality like for example in this i added the theme of mordern clinic so it just provided me with the overall design while i intalled the elemontor plugin which gave me the tools to add more functionality.
Child themes:
so child theme is basicaally a folder on top of the main or parent theme in which you add customization for your styles or themes or even add functionality. you can also add to the main theme but whenever that theme will be updated your whole customize code will be deleted so to overcome this problem we made child themes
CPT(Custom Post Types):
CPT (Custom Post Type): A content type you create yourself, separate from Posts/Pages used when you need many repeatable entries with the same structure (e.g. Team Members, Products).
Posts are time-based content, changes often (blog articles, news).
Pages are static, permanent content (About, Contact).
CPT are structured, repeatable data multiple entries sharing the same fields (Doctors, Products, Testimonials).
PHP structure of a custom Elementor
widget (conceptual walkthrough)
Basically: what we just did manually in the GUI (Style/Content tabs), a custom widget does the same thing via PHP code.
register_controls()→ defines the same fields we set manually (background color, padding, text) — so any user can adjust them from the Elementor panel.render()→ takes those settings’ values (like$settings['bg_color']) and prints out the actual HTML/CSS that shows up on the page.
So it’s the same work, just turned into a reusable, code-based form instead of doing it by hand each time.