Agree that in this example, text instead of icons would be preferable. Often for clarity, the icon is used together with the text, but after users remember the icon and get used to it, the text is removed. Such a method can work if the service has a permanent audience or users familiar icon on the experience of working with similar interfaces. The question arises: what to do for those services to which new users come regularly who have not received the necessary experience before, or does the old and new audience of which, for example, represent the same phone in different ways? For them, a good solution is to use, first of all, the text, and the icon, if necessary, only to enhance the perception. In this situation, do not leave the icon without explanation.
And now try to imagine the icons that will symbolize the secretary, accountant and methodologist. Most likely, they have a great similarity between themselves and for the user to understand who you meant, we again have to add an explanation — text.
Therefore, in order to avoid misunderstanding, I suggest, first of all , Use text, not icons. If possible, you can do without them, the text will be enough.
Translated using Google