I border the blue or glide without strain, the same simple word for land or for lane.

Add an OR to the end, and I’m like a detective. Add Gadget after that - go, go, get Penny to save the day. Left alone, I look at things to find clues; another word for the work done.

A path that's not for wandering feet, where rubber meets concrete. The chariot's resting place, between street and front door space.

I am a body that has no heart, yet I am always growing. I have two points but no direction, and a curve that never ends. I am the sliver of a fingernail you cannot clip, and the only smile that can be seen from a thousand miles away. What am I?

Compound word for an animal First, seven letters - a device used to illuminate your path. Oil is used as the ignition source. Second, four letters - can be a food or pet. Comes from water. Can also be a sport to pass as the time or competitively.