Noun

• S: (n) recycling (used or abandoned materials for use in creating new products) "Every Monday, we put our recycling out on the curb for pick-up"
• S: (n) recycling (the act of processing used or abandoned materials for use in creating new products)

Verb

• S: (v) recycle (cause to repeat a cycle)
• S: (v) recycle, reprocess, reuse (use again after processing) "We must recycle the cardboard boxes"