fa-cogs icon in font awesome icons has 1 variant fas i.e.,solid.
fa-columns icon in font awesome icons has 1 variant fas i.e.,solid.
fa-comment-alt icon in font awesome icons has 2 variants regular (far) and solid (fas)
fa-compress-alt icon in font awesome icons has 1 variant fas i.e.,solid.
fa-compress-arrows-alt icon in font awesome icons has 1 variant fas i.e.,solid.
fa-concierge-bell icon in font awesome icons has 1 variant fas i.e.,solid.
fa-crop-alt icon in font awesome icons has 1 variant fas i.e.,solid.
fa-cut icon in font awesome icons has 1 variant fas i.e.,solid.
fa-deaf icon in font awesome icons has 1 variant fas i.e.,solid.
fa-diagnoses icon in font awesome icons has 1 variant fas i.e.,solid.