Value Engineering Finding a cheaper or better way to do the same job — like discovering a different route to work that's faster and uses less gas, without arriving late.
Cost Reduction Just cutting the price tag — like buying fewer groceries instead of finding cheaper recipes that still make a full dinner. You get less, not smarter.
Function Analysis Asking "what does this part actually need to do?" before asking "what does it cost?" — like deciding you need "a way to get to work" instead of "a 2024 sedan."
Lifecycle Cost The total cost over a thing's whole life — like comparing two cars by adding up the purchase price, gas, insurance, and repairs over 5 years, not just the sticker price.
Design Lock The point where you can't easily change the plan anymore — like baking a cake: once it's in the oven, you can't swap regular flour for almond flour.