Why are there Dry and Liquid Measuring Cups? What's the difference?

Why are there Dry and Liquid Measuring Cups? What's the difference?

I am going out on a limb here and estimating that at least 4 out of every 10 homes now only has 1 set of measuring cups.  And this one set is used to measure

4 Measuring Cups Plastic Set, Plastic Measuring Cup for Dry and Liquid Ingredients, Stackable Clear Measuring Cups, Measuring Cups Plastic, Measuring Cups Liquid (4 PCs Plastic Measuring Cups): Home & Kitchen

Dry vs Liquid Measuring Cups - What's The Difference?

The Difference Between Liquid & Dry Measuring Cups

The Best Liquid Measuring Cups of 2024, Tested & Reviewed

The Difference Between Liquid & Dry Measuring Cups

Finally: A Liquid Measurement Conversion Chart for Any Recipe

Dry Vs. Liquid Measuring Cups: Here's What You Need To Know

Liquid vs. Dry Measuring Cup. Is There a Difference? - Between Carpools

When is a Cup Not a Cup? - Learning to Measure with Rhonda Sue's

Are Liquid and Dry Measuring Cups the Same?

Liquid & Dry Measurement Conversion Chart