Search by word forms in FB2 is a type of full-text search that, in addition to the word in its original form, also searches for other known word forms in FB2. For example, a search is made for a word in the form of the singular and plural, in various forms of verbs, in various cases, conjugations, etc. Moreover, the words in the query can be presented not only in some initial form, but in any form for which they will be found all other supported word forms.
By default, word forms are searched in FB2 for English words only. However, the GroupDocs.Search full-text search engine provides an interface for implementing word form searches for any language.
An example of searching by word forms in FB2 is the query "did", for which the words "do", "does", "doing", "done" will also be found in the text.
You can also perform word forms search in many other file formats. Please see the full list below.