1. Cossacks / Cossacks . So who is the member of the group whips lashed Pussy Riot - Cossacks or Kozak ? Correct the first option, with the letter A. Kozak - is an obsolete spelling . And he sometimes writers need to create a national flavor . For example, Gogol's " Taras Bulba " can only be found " Cossacks " - in Ukrainian style.
There is another question, and it is no longer associated with spelling : where to put the emphasis still - or Cossacks Cossacks ? That's right - "The Cossacks ", " Cossacks ." And only novel by Leo Tolstoy we call in another way: "Cossacks ."
2 . Campaign / company . In this pair used both options , it remains only to determine in which cases require the letter O , and in which - A. If it is a company , then choose A: company . Or, for example , Friends cheerful company . About on A change in only one case : if it is a sum of some events. For example, an election or campaign.
3 . Customs clearance / customs clearance . From the same series verbs like " focus / concentrate ," " determining / to condition " and the like. Many such pairs , but a single rule for them , unfortunately, does not exist. There is equal options such as " determining / to condition ." But there are other couples in which one verb - literary , conventional , and the other - admissible .
Focus - correctly. Focus - is permissible , but it is better to choose O. There are quite unacceptable verbs with A, such as " otsrachivat ." The reason for inadmissibility here is generally clear .
As for the pair of " customs clearance / customs clearance ," that is correct - " customs clearance ". A variant with - a professional jargon.
4 . Charm . Write instead of " charm " , " charm to " - a fairly common mistake , although it seems someone wild illiteracy. For example, one of the queries in the "Reference Desk " " Gramoty.ru " looks like this: "How to : personal charm to private or charm to ? " This error probably stems from confusion with the word " smell " that do not have anything to do with charisma . Remember: charm, charm , charming written by A.
5 . Detracts / beg. These are two different verbs . Beg - ask plaintively . Belittle - downplay , from the words "small" , "small" .
6. Bottling / filling . House wine or wine on tap ? Linguists say that the so-called spelling doublets . Still not quite twins. The fact that they use different sphere . Filling - with an emphasis on G - it's something like professional jargon . This option is used in a professional environment , and write on the labels of " filling ". But " spill " - with the emphasis on and - a common word . By the way, in this form it is used in a figurative sense : " Millionaires new spill ."
7. Razed / raze . Again, different values - different letters . Team equalized, ie made it equal. But " hurricane razed the house to the ground " - here the word verification " smooth ."
8. Tracing / investigation . In the modern Russian language is considered a good option " tracing " through A, although many believe it is illiterate. That's because earlier considered true spelling of the word through O : Investigation . It was a kind of adjective exception because under the rules of consoles raz-/ras- written , if they are in the unstressed position , and roz-/ros- - if in shock ( passed out ) . In the standard dictionaries long time it was recorded version with O : Investigation . Later this word simply brought into line with the general rule.
9. Occasionally / occasionally. Yes, and many have such a dilemma . Adverb " occasionally " confused with the adverb "rarely" . However, we should remember that all adverbs are written on iz-/do-/s- And at the end.
10 . Podshofe / podshafe . And finally, a word to those who are already a little drunk from the information . What kind of a beast - tipsy - and accurately whether it is written together ? Maybe it's just an excuse "under" and some unknown " shofe "? No, the word is spelled exactly together and through A. Because formed from the French chauffer - warm , heat .
Sober you look at the spelling !
