Answer:
What is the word that even in plain sight remains hidden?
Handy when you need to measure something or run a kingdom.
Usually green but can be brown. It's a great place to play or lie down. What is it?
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The more you have of me, the less you see. Who am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?