Simple Words to Compound - 3

Tread combined with mill creates "treadmill," an exercise machine with a moving belt for walking or running in place.

Broomstick is a standard compound word referring to a brush with a long handle used for sweeping. The other options do not form valid compound words with broom.

Heartburn is a common compound word describing a burning sensation in the chest. The other options do not form standard compound words with heart.

Livewire is a compound word used to describe someone who is energetic or unpredictable, or literally an electrified wire. The other options don't form valid compounds with live.

Downright is a compound word meaning completely or thoroughly (e.g., downright awful). The other options don't form valid compound words with down.

Fortnight is a compound word meaning a period of two weeks (fourteen nights). The other options don't form valid compounds with fort.

Gravestone is a compound word referring to a stone marker placed at a burial site. The other options don't form valid compounds with grave.

Hovercraft is a compound word for a vehicle that travels over land or water on a cushion of air. The other options don't form valid compounds with hover.

Patchwork is a compound word referring to needlework in which small pieces of cloth in different designs are sewn together. The other options don't form valid compounds with patch.

Flawless is a compound word meaning without any imperfections or defects. The other options don't form valid compounds with flaw.

Freshman is a compound word referring to a first-year student (in high school or college). The other options don't form valid compounds with fresh.

Darkroom is a compound word referring to a room with controlled lighting used for photographic processing. The other options don't form valid compounds with dark.

Readable is a compound word meaning clear and easy to read or decipher. The other options don't form valid compounds with read.

Upstream is a compound word meaning in the direction opposite to the flow of a river or stream. The prefix 'up-' can be added to 'stream' to form this common geographical term used to describe locations or movements against the current.