What?
This is furniture / a bulky item
Where?
If still in reasonable condition but just no more use to you, consider donating it to a charity shop or making it available online.
Furniture at the end of its useful life can often be recycled, especially items made from wood and metal. Most furniture can be recycled at your local civic amenity site and some local authorities may also provide a bulky goods collection service for a fee.
General Comment / Tip
If you have a piece of furniture that is still usable, you could consider selling it, passing it on to someone else or donating it – some charity shops accept furniture for resale.