Panel, in particular a floor panel or a wall panel, comprising: - a centrally located core provided with an upper side and a lower side, which core defines a plane; wherein the distance between the upper side and the lower side defines a thickness of the panel; - at least one first coupling part and at least one second coupling part arranged on opposite sides of the core, wherein the first coupling part and the second coupling part of another panel are arranged to be coupled with a downward or vertical motion; - wherein the first coupling part comprises an upward tongue, at least one upward flank lying at a distance from the upward tongue and an upward groove formed in between the upward tongue and the upward flank, wherein the upward groove is adapted to receive at least a part of a downward tongue of a second coupling part of another panel, wherein the side of the upward tongue facing towards the upward flank is the inside of the upward tongue and the side of the upward tongue facing away from the upward flank is the outside of the upward tongue; - wherein the second coupling part comprises a downward tongue, at least one downward flank lying at a distance from the downward tongue, and a downward groove formed in between the downward tongue and the downward flank, wherein the downward groove is adapted to receive at least a part of an upward tongue of a first coupling part of another panel, wherein the side of the downward tongue facing towards the downward flank is the inside of the downward tongue and the side of the downward tongue facing away from the downward flank is the outside of the downward tongue; wherein at least a part of the inside of the upward tongue is inclined towards the upward flank, and at least a part of the inside of the downward tongue is inclined towards the downward flank, and wherein at least a part of an upper side of the upward tongue is inclined relative to the plane of the panel, such that the upper side of the upward tongue comprises a highest point, and wherein at least a part of an upper side of the downward groove is inclined relative to the plane of the panel, such that the upper side of the downward groove comprises a highest point; characterized in that the upward tongue has a minimum, average or maximum width, as measured in the plane of the panel, wherein the highest point of the upward tongue is arranged less than 50%, preferably less than 25% of the width from the outside of the upward tongue, and in that the downward groove has a minimum, average or maximum width, as measured in the plane of the panel, wherein the highest point of downward groove is arranged less than 50%, preferably less than 25% of the width from the downward flank. - a centrally located core provided with an upper side and a lower side, which core defines a plane; wherein the distance between the upper side and the lower side defines a thickness of the panel; - at least one first coupling part and at least one second coupling part arranged on opposite sides of the core, wherein the first coupling part and the second coupling part of another panel are arranged to be coupled with a downward or vertical motion; - wherein the first coupling part comprises an upward tongue, at least one upward flank lying at a distance from the upward tongue and an upward groove formed in between the upward tongue and the upward flank, wherein the upward groove is adapted to receive at least a part of a downward tongue of a second coupling part of another panel, wherein the side of the upward tongue facing towards the upward flank is the inside of the upward tongue and the side of the upward tongue facing away from the upward flank is the outside of the upward tongue; - wherein the second coupling part comprises a downward tongue, at least one downward flank lying at a distance from the downward tongue, and a downward groove formed in between the downward tongue and the downward flank, wherein the downward groove is adapted to receive at least a part of an upward tongue of a first coupling part of another panel, wherein the side of the downward tongue facing towards the downward flank is the inside of the downward tongue and the side of the downward tongue facing away from the downward flank is the outside of the downward tongue;