What do those words mean?

Object-oriented

Code is organised into "objects" that bundle information together with the actions that use it, like little building blocks.

Multi-paradigm

Supports several styles of coding, so you can pick whichever fits the job.

Procedural

Instructions run in order, organised into functions (procedures).

Compiled

The whole program is translated into computer-speak once, before it runs, which makes it very fast.

Interpreted

The program is read and run line by line as it goes, which makes it flexible and easy to experiment with.

Statically typed

The types of your variables (number, text, ...) are checked before the program runs, catching mistakes early.

Dynamically typed

Types are worked out while the program runs: less to write, more freedom.

Markup language

Describes what is ON a page (headings, lists, links) rather than giving the computer step-by-step instructions to run.

Runs in every browser

Every browser on every device understands it; nothing extra to download.

No installs needed

You can start with nothing but a text editor and a web browser.