/ɜːrθ/
Earth has 13 different meanings across 3 categories:
Noun · Verb · Proper Noun
the solid part of the earth's surface
"the plane turned away from the sea and moved back over land"
"the earth shook for several minutes"
"he dropped the logs on the ground"
once thought to be one of four elements composing the universe (Empedocles)
"Ancient philosophers like Empedocles regarded earth as one of the four fundamental elements that compose the entire universe."
the concerns of this life as distinguished from heaven and the afterlife
"they consider the church to be independent of the world"
Soil.
"The gardener dug through the rich, dark earth to plant new seeds."
In plain English: Earth is the planet we live on, which is the third closest to the sun and has land, water, and air.
"She decided to plant some flowers in the earth after the rain stopped."
Usage: Use "earth" to refer to the loose material covering the ground, such as when digging or planting seeds. Do not use this word to mean the planet itself, which requires the lowercase term only in specific contexts like "Mother Earth."
hide in the earth like a hunted animal
"The frightened rabbit dove into the dirt to escape the approaching dogs."
To connect electrically to the earth.
"The technician grounded the metal cabinet to prevent electrical shock."
In plain English: To earth something means to connect it to the ground so that extra electricity can safely flow away.
"He earthed his fishing rod to prevent static shock."
Usage: As a verb, to earth means to connect an electrical device or system to the ground wire to prevent shock hazards and dissipate excess electricity. Do not confuse this with the noun form referring to soil or the planet; when used as an action, it specifically describes establishing a safe electrical path to the earth.
The third planet of the Solar System; the world upon which humans live.
"In our solar system, earth is the third planet from the sun."
Alternative letter-case form of Earth; Our planet, third out from the Sun.
The word "earth" comes from Old English eorþe and ultimately traces back to the Proto-Indo-European root meaning "earth." Its original sense referred to the dirt or ground.