earth
A1Neutral to formal
Definition
Meaning
The planet on which we live; the third planet from the sun.
The substance of the land surface; soil, dirt, or ground. Also used to refer to the world as a place of human existence, or to denote electrical grounding.
Linguistics
Semantic Notes
The word can refer to the planet as a whole (proper noun, often capitalized: Earth), the physical substance (soil), or the mortal world as opposed to heaven. Context determines capitalization and meaning.
Dialectal Variation
British vs American Usage
Differences
In British English, 'earth' is the standard term for electrical grounding. In American English, 'ground' is more common for this meaning.
Connotations
Similar connotations of home, nature, and substance in both varieties.
Frequency
Equally high frequency in both varieties for core meanings. The electrical term shows the primary lexical difference.
Vocabulary
Collocations
Grammar
Valency Patterns
[V] + earth + [N] (earth a cable)[V] + on + earth (what on earth)[ADJ] + earth (dry earth)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “down to earth”
- “cost the earth”
- “run to earth”
- “what on earth”
- “salt of the earth”
Usage
Context Usage
Business
Rare earth elements are crucial for modern electronics.
Academic
The Earth's axial tilt is approximately 23.5 degrees.
Everyday
I need to buy some potting earth for my plants.
Technical
Ensure the circuit is properly earthed to prevent shock.
Examples
By Part of Speech
verb
British English
- The electrician must earth the metal casing for safety.
- All outdoor equipment should be properly earthed.
American English
- The electrician must ground the metal casing for safety.
- All outdoor equipment should be properly grounded.
adverb
British English
- (No standard adverbial form. 'Earthly' is an adjective.)
American English
- (No standard adverbial form. 'Earthly' is an adjective.)
adjective
British English
- She has a very down-to-earth attitude.
- The earth sciences department is highly regarded.
American English
- She has a very down-to-earth attitude.
- The earth sciences department is highly regarded.
Examples
By CEFR Level
- We live on planet Earth.
- The plant needs water and good earth.
- The astronauts looked back at the Earth from space.
- He filled the hole with fresh earth.
- Rare earth metals are essential for smartphone manufacturing.
- Her down-to-earth perspective was refreshing during the debate.
- The theory posits that early Earth's atmosphere was rich in methane.
- The archaeologist carefully sifted through the ancient earth at the dig site.
Learning
Memory Aids
Mnemonic
Think of 'EARTH' as 'EAR' + 'TH' – you hear the sounds of the earth (wind, animals) with your ear.
Conceptual Metaphor
EARTH IS A MOTHER (nurturing, life-giving), EARTH IS A CONTAINER (we live on/in it), EARTH IS A GROUNDING FORCE (stability, reality).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse 'earth' (земля as planet/soil) with 'land' (земля as territory/property).
- The electrical term 'earth' (BrE) translates to 'заземление', not просто 'земля'.
- Capitalization: 'Earth' as planet, but 'earth' as soil.
Common Mistakes
- Incorrect: *'The earth is round.' (Capitalize when referring to the planet: 'The Earth is round.')
- Incorrect: *'I need to ground the wire.' (Acceptable in AmE, but BrE prefers 'earth the wire'.)
- Incorrect: *'He is very earth.' (Missing adjective form: 'He is very down-to-earth.')
Practice
Quiz
In which sentence is 'Earth' correctly capitalized?
FAQ
Frequently Asked Questions
Capitalize 'Earth' when referring to our planet as a proper noun (like Mars or Venus). Use lowercase 'earth' for soil, ground, or the substance.
As nouns, they can be synonyms for soil/land. In electrical contexts, British English uses 'earth' (verb: to earth), while American English uses 'ground' (verb: to ground).
Yes, it means practical, realistic, and unpretentious. Example: 'Despite her fame, she's very down to earth.'
Yes, primarily in British English meaning to connect an electrical conductor to the ground. In gardening, it can also mean to cover something with soil.