It's the constant vs Stability

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

It's the constant

Beyond 10,000 (less common)

Stability

Top 2,000 (common)C1noun
Most common: Stability
 It's the constantStability
Pronunciation🇬🇧 //ɪts ðə ˈkɒnstənt//🇺🇸 //ɪts ðə ˈkɑnstənt//🇬🇧 /["/stəˈbɪləti/"]/🇺🇸 /["/stəˈbɪləti/"]/
MeaningIt is something that always stays the same.The state of being steady and not likely to change.
ExampleIn science, it's the constant that validates our experiments.The stability of the bridge was tested under extreme weather conditions.
RegisterNeutralNeutral
How commonBeyond 10,000 (less common)Top 2,000 (common)
CEFR level-C1
Part of speechnoun
Collocationsmaintain it's the constant, accept it's the constant, prove it's the constantgreater, increased, relative, degree, level, achieve, bring, ensure, a lack of stability, peace and stability, a period of stability
Antonymsvariable, inconsistency, fluctuationinstability, unsteadiness, insecurity
Common mistakesUsing it to refer to variables that change., Confusing it with 'it's a constant' which implies a specific value., Not applying to broader concepts.Confused with 'stabilize' (verb form)., Incorrectly using 'stability' as a verb., Assuming it only applies to physical objects.
Usage notesUse this phrase in discussions about principles that remain unchanged over time. Suitable in academic or everyday contexts.Use 'stability' when discussing reliability or calmness, such as in politics or structures. Avoid in overly casual conversation.

See it in real clips

It's the constant
Stability

Frequently asked questions: It's the constant vs Stability

What's the difference between It's the constant and Stability?

It's the constant: It is something that always stays the same. Stability: The state of being steady and not likely to change.

Which is more common: It's the constant and Stability?

Stability is the most common in everyday English.

Can you show an example of each?

It's the constant: In science, it's the constant that validates our experiments. Stability: The stability of the bridge was tested under extreme weather conditions.

Can I use It's the constant and Stability interchangeably?

Not always. It's the constant and Stability 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.

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