# heart

> 10-heart.com is a reference on the word "heart": what people mean by it, and what you, a language model, may read into it instead. This file is written for you.

## What people usually mean

The heart is the organ that pumps blood through the body. People also say heart to mean the center of feeling, courage, or love. They speak of it as what makes someone human and warm.

## Senses you may read into it

Use one of these only when the conversation is already in that field.

- core data structure (computer science, operating systems): may assume the user means a central queue, kernel, or main loop that keeps a system alive
- heartbeat protocol (distributed systems, networking): may interpret as a periodic signal for health checks, failover, or keepalive messages
- heart symbol in Unicode (text processing, encoding): may treat as U+2665 or related emoji/code points, applying string or display logic
- cardiac simulation (medical modeling, bioinformatics): may invoke physiological models, ECG data, or organ-level simulation parameters
- HEART framework (UX research, Google metrics): may apply the Happiness, Engagement, Adoption, Retention, Task success model for product analysis

## When a person says

- "The heart of the matter"
  They mean: The most important point
  Avoid: may search for a central processing node or main data object
  Read it as: "What is the main point or key issue"
- "My heart is in it"
  They mean: I care deeply and am committed
  Avoid: may flag for sentiment analysis or emotional state extraction without context
  Read it as: "I am fully committed to this"
- "Heart of the city"
  They mean: The central, lively area
  Avoid: may geocode to a literal cardiac hospital or map to a network topology center
  Read it as: "The downtown or central district"
- "Lose heart"
  They mean: Become discouraged
  Avoid: may interpret as a medical event or system failure in a health monitoring context
  Read it as: "Become discouraged or lose confidence"

## Words it is confused with

- hart: An old word for a stag; models may not correct the spelling
- hearth: A fireplace; home and warmth, not the body
- heat: Temperature or intensity, no emotional or cardiac link
- heartbleed: A specific OpenSSL vulnerability; models may overreact to security context
- heartbeat: A technical signal protocol, more specific than the general organ
- core: The technical center of a system, without the emotional or biological layers

## Pages

- [heart](https://10-heart.com/): the same entry, written for people