The words "demand" and "require" are often confused, but they have distinct meanings. "Demand" implies a strong, forceful request, often involving an expectation of obedience or compliance. It suggests a more assertive and sometimes even aggressive tone. "Require," on the other hand, simply indicates a necessary condition or need. It's a more neutral and less forceful term.

Here are some example sentences to illustrate the difference:

• Demand: "The angry customer demanded a refund." (Meaning: The customer insisted on getting their money back in a forceful way.) Translation: The angry customer insisted on a refund forcefully.

• Require: "The recipe requires two cups of flour." (Meaning: The recipe needs two cups of flour to be successful.) Translation: Two cups of flour are needed for this recipe.

• Demand: "My boss demanded that I finish the project by Friday." (Meaning: My boss strongly insisted that I complete the project by Friday.) Translation: My boss strongly and forcefully insisted that I complete the project by Friday.

• Require: "This job requires a college degree." (Meaning: A college degree is a necessary qualification for the job.) Translation: A college degree is necessary for this job.

• Demand: "The protestors demanded an end to the war." (Meaning: The protestors strongly requested an end to the war.) Translation: The protestors strongly requested an end to the war.

• Require: "Building a house requires a lot of planning and effort." (Meaning: Building a house needs careful planning and effort.) Translation: Building a house needs a lot of planning and effort.

Notice how "demand" implies a sense of urgency and authority, while "require" simply states a necessity. Choosing the right word depends on the context and the level of urgency or force involved.

Happy learning!