linguistic:translation, stylistic:tone
Compounds

Compounds have been present in the language since the Proto-Uralic era. Numerous ancient compounds transformed to base words during the centuries. Today, compounds play an important role in vocabulary.

A good example is the word arc:

Compounds are made up of two base words: the first is the prefix, the latter is the suffix. A compound can be subordinative: the prefix is in logical connection with the suffix. If the prefix is the subject of the suffix, the compound is generally classified as a subjective one. There are objective, determinative, and adjunctive compounds as well. Some examples are given below:

According to current orthographic rules, a subordinative compound word has to be written as a single word, without spaces; however, if a compound of three or more words (not counting one-syllable verbal prefixes) is seven or more syllables long (not counting case suffixes), a hyphen must be inserted at the appropriate boundary to ease the determination of word boundaries for the reader.

Other compound words are coordinatives: there is no concrete relation between the prefix and the suffix. Subcategories include reduplication (to emphasise the meaning; olykor-olykor 'really occasionally'), twin words (where a base word and a distorted form of it makes up a compound: gizgaz, where the suffix 'gaz' means 'weed' and the prefix giz is the distorted form; the compound itself means 'inconsiderable weed'), and such compounds which have meanings, but neither their prefixes, nor their suffixes make sense (for example, hercehurca 'complex, obsolete procedures').

A compound also can be made up by multiple (i.e., more than two) base words: in this case, at least one word element, or even both the prefix and the suffix, is a compound. Some examples: