Generally, the capital of the radical part has a certain meaning, which will give meaning to the word. For example, the word "North" is related to money in Otawa, because it was the representative of money in ancient times, which is easy to understand.
Next is the word "female". Most of the capitals of the radicals are silent, so they have only formal meaning and will not be expressed by sound. So from this point of view, it can be regarded as an attachment, because it is attached to the font, so there will be some meaning.
Examples of free radicals:
Say: pronounced Yan, originally trumpet-shaped. Language activities.
Chang: pronounced "Han", it was originally a hieroglyph protruding from a cliff and related to rocks.
Moo: pronounced fang, it is a hieroglyph of a square musical instrument (box). It means that the utensils for loading things are related to collecting things.
Ghost: pronounced Gui, it was originally a hieroglyph of a big-headed man, which is generally related to ghosts and superstitions.
Chi: pronounced as Biao, long hair is fluttering, which is generally related to hair.
Rhyme: pronounced as "three strokes", it was originally an pictograph of several hairs, which was generally related to hair and patterns.