SPA

/ˌɛs-piː-ˈeɪ/

n. “A web app that loads once and lives in the browser.”

SPA, short for Single-Page Application, is a type of web application or website that dynamically updates a single HTML page as the user interacts with it, rather than loading entirely new pages from the server for each action. This approach delivers faster navigation, smoother user experiences, and more app-like behavior in the browser.

Key characteristics of an SPA include:

Excel

/ˈɛk.səl/

n. “Numbers, tables, and logic — tamed in cells.”

Excel, whether the classic desktop version from Microsoft or the cloud-based Google variant often called Google Sheets, is a spreadsheet application designed to organize, calculate, and visualize data. It turns rows and columns into a playground for formulas, charts, and structured analysis, allowing humans to impose order on numeric chaos.