If you have created dictionaries with search terms (see Creating and Managing Dictionaries), you have the option to call up the frequencies for these words. Simply choose Word frequencies (Only Words From Dictionary) of the Drop-down menu Word frequencies in the tab MAXDictio from the ribbon menu. The following dialog window will appear, which essentially corresponds to the standard dialog for word frequencies:

The setting options are described in the section on Word frequencies (see Analyze Word Frequencies), however neither lemmatization nor stop word lists can be used.
The count begins as soon as you click on OK. The results table naturally contains only dictionary words.