what's the difference between poisonous and venomous

Short answer:
Poison is harmful if you touch, eat, or inhale it; venom is harmful when an animal injects it into you (usually by bite or sting). In other words:

Venomous: It bites/stings me, I die.
Poisonous: I bite/touch it, I die.

What “poisonous” really means

A poisonous plant or animal harms you when its toxin gets into your body passively — you don’t get “injected,” you just eat, touch, or breathe it in.

Typical ways poison enters:

• Eating something toxic (like a poisonous mushroom).

• Touching something that transfers toxins through your skin (like poison ivy causing a rash).

• Breathing in toxic fumes or particles.

Common examples:

• Poison ivy and some other plants that irritate or harm on contact.

• Certain mushrooms that make you very sick if eaten.

• Some animals whose skin or tissues are toxic to eat, like poison dart frogs.

So if you have to make the first move (eat it, lick it, touch it) and you get hurt, it’s poisonous.

What “venomous” really means

A venomous creature has a specialized way to inject toxins directly into your body, usually through a bite or sting that breaks the skin.

How venom gets in:

• Bite (like a rattlesnake or cobra using fangs).

• Sting (like bees, wasps, scorpions, or stingrays).

• Specialized structures like barbed threads in jellyfish tentacles.

Common examples:

• Venomous snakes (cobras, rattlesnakes, mambas).

• Venomous spiders and scorpions.

• Jellyfish that inject toxins with tiny barbed cells.

If it has to make the move to inject you (bite, sting, stab), it’s venomous.

Easy memory trick (forum-style)

People online often sum it up like this:

Venomous: It bites me, I die.
Poisonous: I bite it, I die.

That matches the biology:

• Venomous = toxin is injected into you.

• Poisonous = toxin is taken in by you (eat, touch, inhale).

Can something be both?

Yes, some creatures blur the line.

• A few animals can be venomous and poisonous , depending on how you encounter them.

• One example from biologists: certain garter snakes are harmless to be bitten by (their bite isn’t dangerous) but are toxic to eat because they store toxins from their prey. That makes them effectively poisonous as food, even though we think of snakes as venomous.

So the same species (or group) can be labeled differently depending on the delivery method of the toxin.

Which is more dangerous?

Neither word automatically means “more deadly.” The danger depends on:

• The type of toxin (what part of the body it targets — heart, nerves, muscles, etc.).

• The dose (how much toxin enters your body).

• Your size, health, and how quickly you get treatment.

Both poisons and venoms can be mild (just a rash) or life‑threatening (heart failure or paralysis).

Quick HTML table you can use

Here’s a simple HTML table that contrasts the two:

html

<table>
  <thead>
    <tr>
      <th>Feature</th>
      <th>Poisonous</th>
      <th>Venomous</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>How toxin enters</td>
      <td>Ingested, inhaled, or absorbed through the skin</td>
      <td>Injected through bite, sting, or similar puncture</td>
    </tr>
    <tr>
      <td>Who makes the “first move”</td>
      <td>You touch, eat, or breathe it in</td>
      <td>The animal bites or stings you</td>
    </tr>
    <tr>
      <td>Common examples</td>
      <td>Poison ivy, toxic mushrooms, poison dart frogs</td>
      <td>Rattlesnakes, cobras, scorpions, jellyfish</td>
    </tr>
    <tr>
      <td>Key memory phrase</td>
      <td>"I bite it, I die"</td>
      <td>"It bites me, I die"</td>
    </tr>
  </tbody>
</table>

TL;DR:
If the toxin hurts you when you eat/touch/breathe something, it’s poisonous ; if an animal has to inject the toxin with a bite or sting, it’s venomous.

Information gathered from public forums or data available on the internet and portrayed here.