Africanized honey bees (AHB), known colloquially as "killer bees" or Africanized bees, are hybrids of the African honey bee, Apis mellifera scutellata (not A. m. adansonii; see Collet et al., 2006), with various European honey bees such as the Italian bee A. m. ligusticaand A. m. iberiensis.
Killer bees are called killer bees because they kill people and other mammals.
'Killer bees' is a name created by the media. Their proper name is Africanized bees and as their name suggests, they originated in Africa. They are not native to the Americas and are therefore an invasive species.
The killer bee got its name because it can kill humans and most insects.
A killer whale's scientific name is and Orca
The scientific name for Carniolan honey bees is Apis mellifera carnica.
Xylocopa
Killer whales' scientific name is Orcinus orca.
Apis mellifera.
Apidae Bombus
Nothing significant. 'Killer bee' is a name given by sensationalist media to what is more properly called Africanized honey bees. Apart from being somewhat more aggressive (hence the name) they are indistinguisable from other honey bees.
Orcas are the same thing as killer Wales. killer wale is just another name for an orca. Orca is the killer wales scientific name.