Decline vs Depreciation

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

Decline

Top 1,000 (very common)B2verb

Depreciation

FormalBeyond 10,000 (less common)
Most formal: DepreciationMost common: Decline
 DeclineDepreciation
Pronunciation🇬🇧 /["/dɪˈklaɪn/","/dɪˈklaɪnz/","/dɪˈklaɪnd/","/dɪˈklaɪnɪŋ/"]/🇺🇸 /["/dɪˈklaɪn/","/dɪˈklaɪnz/","/dɪˈklaɪnd/","/dɪˈklaɪnɪŋ/"]/🇬🇧 //dɪˌpriː.ʃiˈeɪ.ʃən//🇺🇸 //dɪˌpriːʃiˈeɪʃən//
Meaningto say no to something or to become less.The decrease in value of something over time.
ExampleShe decided to decline the invitation to the party.The depreciation of the car’s value was calculated at $2,000 per year.
RegisterNeutralFormal
How commonTop 1,000 (very common)Beyond 10,000 (less common)
CEFR levelB2-
Part of speechverb
Collocationsconsiderably, dramatically, drastically, by, from, to, decline in importance, numbers, size, etc., politely, respectfullycalculate depreciation, annual depreciation, depreciation expense, depreciation schedule, depreciation allowance
Antonymsaccept, agree, approve-
Common mistakesConfused with 'refuse' - 'decline' can sound more polite., Using 'decline' without an object (e.g., 'I will decline' is incomplete without specifying what)., Mistaking 'decline' for a physical action rather than a polite refusal.Confused with 'devaluation', which refers to a decrease in value due to changes in currency., Misused in non-financial contexts, as 'depreciation' primarily applies to tangible assets., Incorrectly used as both a noun and a verb; it's only a noun.
Usage notesUse 'decline' in formal settings to refuse an offer or request. In informal contexts, 'turn down' is more common. Don't confuse 'decline' with 'decrease'—the former involves refusal, while the latter refers to reduction.Used mainly in finance and accounting contexts. Not typical in casual conversation. Important in discussing asset valuation and taxes.

Frequently asked questions: Decline vs Depreciation

What's the difference between Decline and Depreciation?

Decline: to say no to something or to become less. Depreciation: The decrease in value of something over time.

Which is more formal: Decline and Depreciation?

Depreciation is the most formal of these.

Which is more common: Decline and Depreciation?

Decline is the most common in everyday English.

Can you show an example of each?

Decline: She decided to decline the invitation to the party. Depreciation: The depreciation of the car’s value was calculated at $2,000 per year.

Can I use Decline and Depreciation interchangeably?

Not always. Decline and Depreciation 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.