Extract
From Hull AWE
								
												
				The word extract is pronounced differently, according to whether it is used as a noun or a verb.
- The noun 'an extract' has the stress on the first syllable: 'EX-tract', IPA: /ˈɛks trækt/.
 - The verb 'to extract' has the stress on its second syllable: 'iks-TRACT', IPA: /ɪks ˈtrækt/.
 
Note
- This pattern of shifting stress in words that look identical but belong to two separate word classes is quite common in English. 
- Quirk (1985) (Appendix I.56 B) describes the most common: "When verbs of two syllables are converted into nouns, the stress is sometimes shifted from the second to the first syllable. The first syllable, typically a Latin prefix, often has a reduced vowel /ə/ in the verb but a full vowel in the noun: He was con-VICT-ed (IPA: /kən ˈvɪkt ɪd/) of theft, and so became a CON vict (IPA: /ˈkɒn vɪkt/)" [AWE's rendition of IPA].
- There follows a list of some 57 "words having end-stress as verbs but initial stress as nouns in Br[itish] E[nglish]." Note that "in Am[erican] E[nglish], many have initial stress as verbs also". Quirk's list is the foundation of AWE's category:shift of stress. Additions have been made from, amongst others, Fowler, 1926-1996.
 
 
- Quirk (1985) (Appendix I.56 B) describes the most common: "When verbs of two syllables are converted into nouns, the stress is sometimes shifted from the second to the first syllable. The first syllable, typically a Latin prefix, often has a reduced vowel /ə/ in the verb but a full vowel in the noun: He was con-VICT-ed (IPA: /kən ˈvɪkt ɪd/) of theft, and so became a CON vict (IPA: /ˈkɒn vɪkt/)" [AWE's rendition of IPA].
 
 
- This pattern of shifting stress in words that look identical but belong to two separate word classes is quite common in English.