def volmesh_face_areaness(volmesh, target_areas):
    """Compute the areaness of every face of a volmesh.

    Parameters
    ----------
    volmesh : volmesh object

    Returns
    -------
    dict
        A dictionary of area deviation for each face of the volmesh.

    """
    areaness_dict = {}
    for hfkey in target_areas:
        area = volmesh.halfface_oriented_area(hfkey)
        areaness_dict[hfkey] = abs(target_areas[hfkey] - area)
    return areaness_dict
