For this reason, the terms disabled and grayed out are often used interchangeably. Wording Keep labels short. Try to limit them to one or two words. Avoid abbreviating labels. Do not include punctuation for abbreviations or acronyms.
Punctuation takes up space and reduces readability.
If the component contains values in a specific unit and the unit of measurement may not be immediately obvious to users, then add the unit of measurement in brackets at the end of the label. However, if the component is long, there is a greater chance that users might miss the unit of measurement. Including the unit of measurement in the label is certainly safer. The symbol indicates that the text is a label and creates a visible separation between label and component. However, there is no need for it in modern graphical user interfaces where components are usually distinguished from labels by different background color and borders around the components.