Learn is one of the small group of verbs which have alternative forms for the past tense and past participle. Usage varies according to the variety of English you speak. The Oxford English Corpus shows that in British English and many other varieties learnt is relatively common both as the past participle and the past tense: I’ve really learnt a lot from TV, painters learnt their craft the hard way. In North American English, however, these uses are rather uncommon. Using the form ending in -ed is therefore always a safe choice.
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To avoid sounding unintentionally sexist you could consider replacing layman with layperson in the singular and laypeople in the plural: in layperson’s terms; scholars and educated laypeople alike.
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When introducing points or topics in sequence it is good style to be consistent in your choice of words. If you use firstly, secondly and so on, lastly fits better than last. On the other hand, if you introduce your first point with first, last at the end is perfectly acceptable.
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Although the word Lapp is still widely used and is the most familiar term to many people, the indigenous people referred to by this name consider it somewhat offensive: the better term to use is Sami. The name Samiland for the area they inhabit has yet to fully establish itself.
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Kudos comes from Greek and means ‘praise’. Despite appearances, it is not a plural word. This means that there is no singular form kudo and that the use of kudos as a plural, as in the following sentence, is incorrect: he received many kudos for his work (correct use is he received much kudos for his work).
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Koala, the bear-like Australian marsupials, are widely called koala bears in everyday language. Zoologists, however, regard this form as incorrect on the grounds that, despite appearances, koalas are completely unrelated to bears.
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The use of kind sometimes causes difficulty, as in as in these kind of questions are not relevant where the plurals these and are used with the singular kind. With this or that, speaking of one kind, use a singular construction: this kind of question is not relevant; that kind of fabric doesn’t need ironing. With these or those, speaking of more than one kind, use a plural construction: we refuse to buy these kinds of books; I’ve given up those kinds of ideas. The ungrammatical these kinds has been used since the 14th century, but although often encountered today it should be avoided.
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There are two possible pronunciations for kilometer: /kil-uh-mee-tuh/ and /ki-lom-i-tuh/. The first is traditionally considered correct, with a stress pattern similar to other units of measurement such as centimeter. The second pronunciation, which originated in US English and is now also very common in British English, is still regarded as incorrect by some people, especially in British English.
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The word kaffir is first recorded in the 16th century (as Caffre) and was originally simply an innocuous descriptive term for a particular ethnic group. Although it survives in the names of a few plants, such as the kaffir lily, it is always a racially abusive and offensive term when used of people, and in South Africa its use is actionable.
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Include has a broader meaning than comprise. In the sentence the accommodation comprises 2 bedrooms, bathroom, kitchen, and living room, the word comprise implies that there is no accommodation other than that listed. Include can be used in this way too, but it is also used in a less restrictive way, implying that there may be other things not specifically mentioned that are part of the same category, as in the price includes a special welcome pack.
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