What distinction does old cough have recently yellow phlegm pneumonia and tuberculosis have

Recently, old cough has yellow sputum, pneumonia and tuberculosis are obviously different, but the clinical symptoms caused by pneumonia and tuberculosis will be similar, such as cough, expectoration, hemoptysis, dyspnea, etc., but tuberculosis is caused by Mycobacterium tuberculosis infection, while pneumonia may be caused by Streptococcus pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, etc.