Hollow vs Valley

When to use each in English, with meaning, register, and examples.

Hollow

Top 2,000 (common) B2 adjective

Valley

Top 2,000 (common) A2 noun

	Hollow	Valley
Pronunciation	🇬🇧 /["/ˈhɒləʊ/"]/ 🇺🇸 /["/ˈhɑːləʊ/"]/	🇬🇧 /["/ˈvæli/"]/ 🇺🇸 /["/ˈvæli/"]/
Meaning	Having a space inside; not solid.	A low area of land between hills or mountains.
Example	The tree was hollow, providing a perfect shelter for small animals.	The valley was filled with beautiful flowers in the spring.
Register	Neutral	Neutral
How common	Top 2,000 (common)	Top 2,000 (common)
CEFR level	B2	A2
Part of speech	adjective	noun
Collocations	hollow laughter, hollow point, hollow eyes, hollow sound	broad, deep, high, enter, leave, reach, bottom, floor, side, in a/​the valley
Antonyms	solid, full	mountain, hill
Common mistakes	Confused with 'hallowed' (holy)., Using as a verb instead of an adjective., Mixing up 'hollow' with 'empty' without context.	Confused with 'vale' as they have similar meanings., Mispronounced; often stressed incorrectly on the second syllable., Using 'valley' to describe any low area, without the natural features.
Usage notes	Used when describing objects that are empty inside, such as a hollow tree or hollow shell. Avoid using in overly formal contexts.	Used in geographic contexts. Appropriate in both written and spoken English. Not often used in everyday conversation unless discussing geography or nature.

See it in real clips

Agents of S.H.I.E.L.D. › S1 E1

-You should've run the specs by me... -The bullets are hollow.

Hollow

shepherds the weak through the valley of darkness,

Valley

Frequently asked questions: Hollow vs Valley

What's the difference between Hollow and Valley?

Hollow: Having a space inside; not solid. Valley: A low area of land between hills or mountains.

Which is more advanced: Hollow and Valley?

Hollow is the highest level, at B2, on the CEFR scale.

Are Hollow and Valley the same CEFR level?

Hollow: B2, Valley: A2 on the CEFR scale.

What part of speech are Hollow and Valley?

Hollow: adjective, Valley: noun.

Can you show an example of each?

Hollow: The tree was hollow, providing a perfect shelter for small animals. Valley: The valley was filled with beautiful flowers in the spring.

Can I use Hollow and Valley interchangeably?

Not always. Hollow and Valley are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.