Deduction or induction?
deduction is a noun meaning “That which is deducted; that which is subtracted or removed”; induction is a noun meaning “An act of inducting”. In written English (wordfreq, 2021 data) induction is about 1.8 times as common as deduction.
What is the difference between deduction and induction?
| deduction | induction | |
|---|---|---|
| Part of speech | noun | noun |
| Meaning | That which is deducted; that which is subtracted or removed A sum that can be removed in tax calculations, usually from the taxable amount; something that is written off | An act of inducting A formal ceremony in which a person is appointed to an office or into military service |
| Example | Near-synonyms: extract, reduction; see also Thesaurus:decrement | Near-synonym: orientation |
| Forms | deductions | inductions |
| Pronunciation | /dɪˈdʌkʃən/ /dɪˈdʊkʃən/ | /ɪnˈdʌkʃən/ |
| In writing | 2.9 times per million words | 5.1 times per million words |
Sources: deduction and induction in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of deduction and induction
deduction
- 1
That which is deducted; that which is subtracted or removed
Near-synonyms: extract, reduction; see also Thesaurus:decrement
- 2
A sum that can be removed in tax calculations, usually from the taxable amount; something that is written off
standard deduction
- 3
A sum withheld from an employee's pay for the purpose of paying tax
- 4
A conclusion; that which is deduced, concluded or figured out
He arrived at the deduction that the butler didn't do it
- 5
The ability or skill to deduce or figure out; the power of reason
Through his powers of deduction, he realized that the plan would never work
induction
- 1
An act of inducting
- 2
A formal ceremony in which a person is appointed to an office or into military service
- 3
The process of showing a newcomer around a place where they will work or study
Near-synonym: orientation
- 4
An act of inducing
- 5
Generation of an electric current by a varying magnetic field
- 6
Derivation of general principles from specific instances
Meronym: abstraction
- 7
A method of proof of a theorem by first proving it for a specific case (often an integer; usually 0 or 1) and showing that, if it is true for one case then it must be true for the next
- 8
Use of rumors to twist and complicate the plot of a play or to narrate in a way that does not have to state truth nor fact within the play
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, deduction or induction?
deduction appears 2.9 times per million words; induction 5.1 times per million words.
deduction 2.9 times per million wordsinduction 5.1 times per million words
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search deduction vs induction?
“deduction vs induction” is searched about 110 times a month on Bing (Google reports it together with close variants, so it has no figure of its own) in the United States.
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.