Adverbial is a word or phrase that modifies other modifier or predicate. It answers such questions like “how?”, “where?”, “when?”, “why?”.

Adjunct is an optional adverbial that may be excluded from sentence without losing it's sense and without violating grammar.

Adverbial phrase may be expressed by:

• Adverb;
• Noun in one of locative cases or noun with locative adposition;
• Noun with adposition expressing time;
• Noun in instrumental case;
• Noun in comitative case;
• Pro-adverb;
• Participle with optional dependent words;
• Dependent clause

Typically adverbials follow the word they modify, however adverbials which modify adjective may precede it (specially in colloquial speech). If there are many adverbials modifying the same member of sentence, their order is the following:

1. Place (where?)
2. Manner (how? why?)
3. Time (when?)