'Aru' vs. 'Iru': Not Just for Inanimate and Animate Things
One of the first pairs of verbs you learn in Japanese is あります (arimasu) and います (imasu). The basic rule is simple and effective: use あります for inanimate objects (things) and います for animate objects (people and animals). A book "aru"s, a person "iru"s. This is a great starting point, but as you advance, you'll find some tricky edge cases.
What about a robot? Or a ghost? What about plants? This article will cover the core difference between ある (aru) and いる (iru) and then explore those confusing exceptions to help you make the right choice every time.
1. The Basic Rule: Inanimate vs. Animate
For 95% of situations, this rule will serve you perfectly. If the subject is an object that cannot move on its own, use ある (aru). If the subject is a person or an animal that can move on its own, use いる (iru).
あります (arimasu) / ある (aru) - For Inanimate Objects
Example:
テーブルの上に本があります。
(Tēburu no ue ni hon ga arimasu.)
"There is a book on the table."
います (imasu) / いる (iru) - For Animate Objects
Example:
公園に子供がいます。
(Kōen ni kodomo ga imasu.)
"There are children in the park."
2. The Tricky Cases
What about things that blur the line between animate and inanimate?
| Subject | Verb to Use | Reason |
|---|---|---|
| Plants, Trees | ある (aru) | Though they are alive, they cannot move from place to place on their own. |
| Robots | いる (iru) | If it moves in a life-like way (like an android or AIBO dog), it is treated as animate. A simple factory robot arm might use ある. |
| Ghosts, Monsters | いる (iru) | Supernatural beings are generally considered animate and capable of movement. |
| Fish in a market | ある (aru) | Once an animal is no longer alive and is treated as food or a product, it becomes inanimate. |
| Fish in a tank | いる (iru) | If it is alive and moving, it is animate. |
3. The Deeper Meaning: Willful Movement
The core concept that separates the two verbs is not just "life," but the ability to move according to one's own will. This is why a plant, which is alive but stationary, uses ある (aru). A robot, which is not alive but moves as if it has a will, uses いる (iru).
💡 The Real Question
Instead of asking "Is it alive?", ask yourself, "Can it move on its own?" This will help you solve almost every edge case.
Conclusion
The basic rule of "inanimate vs. animate" is your most reliable guide for choosing between ある (aru) and いる (iru). For the strange cases like plants, robots, or even monsters, thinking about whether the subject can move on its own volition is the key. With this deeper understanding, you'll be able to handle any situation and talk about what exists in the world with perfect accuracy.