Tarot, Astrology, Clairvoyance: A Plain-English Glossary for the Curious

The first time I sat through a reading, I nodded along to about half the words and quietly panicked about the rest. The reader mentioned an "arcana," then a "spread," then something about my "chart," and I remember thinking: I have no idea if these are the same thing or three different things. I didn't want to interrupt to ask. So I just smiled. Big mistake, because you get a lot more out of any of this when you actually understand the words being used on you.

So here's the glossary I wish someone had handed me back then. Not the mystical, incense-scented version. Just plain definitions, grouped so they make sense together, with the honest caveats where they belong.

Tarot, cards, and the mechanics of a reading

Tarot is a deck of 78 cards used as a prompt for reflection. That's the useful way to think about it: a structured set of images a reader interprets to talk through your situation. The deck splits into two halves. The Major Arcana are the 22 "big theme" cards (The Tower, The Star, that sort of thing), usually read as life's larger currents. The Minor Arcana are the other 56, closer to daily-life stuff, sorted into four suits (cups, wands, swords, pentacles), a bit like an ordinary deck of playing cards.

A spread, or tirada in Spanish, is simply the pattern the cards get laid out in. A three-card spread might stand for past, present, and future; a "Celtic Cross" is a bigger, ten-card layout. The spread isn't magic in itself; it's a framework that tells the reader which position means what. When a card shows up upside down, that's called reversed, and many readers treat a reversed card as a softened or blocked version of its usual meaning. Not every reader uses reversals, which is worth knowing before you assume one.

You'll also hear about different decks. The Rider-Waite-Smith is the most widely used and the one most beginners learn on. The Marseille is an older European style. There's no "correct" deck; it's mostly a matter of what imagery a reader connects with.

The people and the perception words

Here's where the vocabulary gets slippery, because several words get used almost interchangeably even though they don't mean the same thing. Clairvoyance literally means "clear seeing": the claimed ability to perceive information beyond the ordinary senses. Videncia, in Spanish, is the broader umbrella term for that kind of intuitive perception. A medium specifically claims to communicate with those who've passed. A tarotista is someone who reads tarot; a vidente is a broader term for someone who works with intuition, cards or not. The labels overlap in practice, and plenty of practitioners wear more than one hat. On a platform like Astroideal you'll see readers describe themselves in several of these ways at once, which is normal rather than suspicious.

Astrology's own vocabulary

Astrology is the study of how the positions of the sun, moon, and planets are said to relate to human life, and it runs on its own dictionary. Your natal chart (or birth chart, or carta astral) is a snapshot of the sky at the exact moment you were born, the raw material an astrologer interprets. Your sun sign is the one most people already know (the "I'm a Scorpio" one). But there's also a moon sign, tied to your emotional inner life, and a rising sign, or ascendant, which relates to how you come across. When someone mentions Mercury retrograde, they mean the period when Mercury appears to move backward from Earth's view, blamed, only half-seriously, for everything from missed trains to garbled texts.

A quick, honest note here: astronomy and astrology are not the same thing. Astronomy is the science of what's actually up there. Astrology is the interpretive tradition built around it. Keeping those two straight will save you a lot of confusion.

A few quick questions people ask

Is tarot the same as fortune-telling? Not really. Most thoughtful readers frame it as a tool for reflection, not a crystal ball, so if someone promises certainty, be skeptical. Do you need to know any of this before a reading? No, a good reader will explain as they go, but knowing the words lets you ask sharper questions. And what's the difference between a psychic and a tarot reader? A tarot reader works from the cards; a psychic claims intuitive perception with or without them. Many people do both.

What these words don't do

Here's the part the glossary can't hide. Learning the vocabulary makes you a better-informed participant; it doesn't turn any of these practices into proven science. Tarot, clairvoyance, and astrology are interpretive traditions, not validated methods for predicting the future, and none of them should stand in for medical, legal, or financial advice. Knowing that a "spread" means a card layout is genuinely useful. Believing the layout guarantees an outcome is where people get themselves into trouble.

I still don't understand every term readers use. New ones surface all the time, and some are specific to one tradition or even one person. But I no longer sit there nodding blankly, and that alone changed how much I got out of it. Understanding the words won't tell you your future. It just means the conversation is finally happening on your terms.

Updated: July 2026