The fruit of many members of this genus is a very rich source of vitamins and minerals, especially in vitamins A, C and E, flavanoids and other bio-active compounds. It is also a fairly good source of essential fatty acids, which is fairly unusual for a fruit. It is being investigated as a food that is capable of reducing the incidence of cancer and also as a means of halting or reversing the growth of cancers. The leaves and the stems are concocted and used in the treatment of asthma, cough, diarrhoea, haemorrhoids etc. The seed is used to treat watery diarrhoea. The root is astringent and is applied to sores, itchy skin etc. Source: https://pfaf.org/
Thorny olive
Elaeagnus pungens
Find more about this tree on Wikipedia.