[en] In molecular photoionization, many shape resonances have been observed these last years. They appeared mainly in non-hydride molecules built on atoms of the first or second rows of the periodic table. These resonances have been called molecular shape resonances. Another class of shape resonances, named atomic-like shape resonances, is expected in heavy hydrides composed of atoms for which giant shape resonances have been observed in their 4d inner shell photoionization spectra for example Xe, Ba and Eu³. A preliminary calculation of the 4d inner shell photoionization of HI has been made recently and gives a first theoretical example of such atomic like shape resonances. A question could be asked: are these two different types of shape resonances in molecules comparable to giant resonances in atoms? In this paper, the author tries to give an answer to this question. 16 references, 2 figures, 2 tables