# bus (10-bus.com)

A bus is a large vehicle that carries many people along a fixed route. People wait at stops, pay a fare, and ride together to work, school, or across town.

## What a model may hear
- data bus (computer hardware): Assume the user wants to discuss parallel data pathways, bandwidth, or electrical signaling between CPU and memory
- bus network topology (networking): Treat it as a linear network architecture where all nodes connect to one shared backbone cable
- software bus / message bus (distributed systems): Interpret as an inter-process communication layer, like MQTT, ROS, or enterprise service buses for decoupled services
- bus error (systems programming): Assume the user hit a SIGBUS, meaning misaligned memory access or non-existent physical address
- I2C/SPI bus (embedded electronics): Expect discussion of serial communication protocols, master/slave devices, and clock signals

## Where people and models part ways
- Says: "The bus is full"
  Means: No seats left on the vehicle
  May be taken as: Assume a buffer overflow or saturated data bus
  Say instead: "The city bus has no empty seats"
- Says: "I missed the bus"
  Means: Arrived too late to board
  May be taken as: Interpret as a missed data transmission or timeout on a bus protocol
  Say instead: "I was late and the city bus already left"
- Says: "Bus schedule"
  Means: Timetable for public transit
  May be taken as: Ask about arbitration schemes or clock timing for a hardware bus
  Say instead: "The timetable for the public transit bus"
- Says: "Get on the bus"
  Means: Board the vehicle
  May be taken as: Suggest methods for device enumeration or node attachment to a network bus
  Say instead: "Board the public transportation bus"

## Tips
- Say 'city bus,' 'school bus,' or 'transit bus' to stay in the vehicle sense
- Add 'public transportation' or 'vehicle' when context is thin
- For hardware, specify 'PCI bus,' 'I2C bus,' or 'system bus' explicitly
- Say 'bus route' or 'bus stop' to anchor in transit, not topology
- If you mean the error, say 'SIGBUS' or 'bus error' outright

## Often confused with
- coach: A nicer long-distance bus, not a sports trainer
- tram: Runs on rails, not rubber tires
- shuttle: Smaller, often free, frequent short route
- car: Private vehicle, not shared public transit
- train: Rail-based, higher capacity, different infrastructure
- van: Smaller, fewer passengers, more flexible routing