While the words "reliable" and "trustworthy" are often used interchangeably, there's a subtle yet important distinction between them. Something that is reliable consistently performs its function well; it's dependable. On the other hand, something or someone that is trustworthy is worthy of trust; they are honest and have good moral character. A reliable car always starts, while a trustworthy friend always keeps secrets.

Let's look at some examples:

• Reliable: "My alarm clock is reliable; it always wakes me up on time." (This means the alarm clock consistently performs its function.) Translation: The alarm clock is dependable and functions well.
• Reliable: "That website is a reliable source of information." (This refers to the consistency and dependability of the information provided.) Translation: That website consistently provides accurate information.
• Trustworthy: "She's a trustworthy friend; she always keeps her promises." (This means she has good moral character and is honest.) Translation: She is honest and dependable; you can believe what she says and count on her to follow through.
• Trustworthy: "He is a trustworthy advisor; he always gives sound advice." (This implies integrity and sound judgment.) Translation: He provides excellent counsel and advice you can trust.

Notice that something can be reliable without being trustworthy, and vice versa. A machine can be reliable in its function, but not inherently trustworthy. Conversely, a person can be honest and trustworthy, but perhaps not always reliable in completing tasks on time. Understanding this difference will help you use these words correctly and express yourself with greater precision. Happy learning!