The dictionary describes a weed as both; "a worthless plant developing wild, specifically one which grows on cultivated ground to the exclusion or harm...
In gardens, parks, courtyards, farms, and almost everywhere that there are flora developing, there will in reality be weeds developing too. Weeds now not...
Weeds are parasitic plants that develop up together with your planted flowers. these undesirable plants sprout anywhere although the placement of soil isn't appropriate...