usually depends on breeds and sexes of each, though all are types of doves (rock doves/pigeons, ringneck/collared doves, and morning doves), just "pigeon refers to size and popularized french term for larger eating dove type, technically anything over certain weight is catigorized by wight as a pigeon, but also for homer/racer/carrier types as well as eating types like kings (kings and modenas come in both show, eating and utility types) ect. also any baby dove is a squeaker, while eating type size age and weight squeakers are squabs (just when the feathers are all or almost all in maybe except under "armpits", but before they start to try to fly and convert baby fat to flying muscles ect).
ringnecks, collards, mourning doves ect, are bad to have with "pigeons", except as sometimes female pigeons with male doves, as seen pigeons when mature and in mating and nesting condition, scalp, pluck eyes, and break legs, wings, and necks of more fragile doves. they do require differant diets if youve seen both in bad and top conditions, and also they carry and can handle differant pathogens, and seen things make ringnecks drop dead, in a day that just made a pigeon sick. its almost like mixing chickens and pigeons.. though ive had all get along, with muscovy ducks ducks even. im disabled and have time to watch constantly and observe and seperate quickly if trouble starts.