Frequency of "Buddha" vs "Bhagavant" in the suttas

Thank you for your kind attention! The thread appears to be a decomposition of the meaning of bhagavant, which is not really what I’m looking for. I’m asking why people addressed the Buddha with this title – and why he is referred to this way throughout the suttas – instead of the Buddha. That is, in a comparison of the numbers in the DPD heat map. Was use of the Buddha acquired later in his life (long after his full awakening)? Why? There may not be an easy answer so that’s OK too :slightly_smiling_face: