Difference between Monotone and Droning

MONOTONE vs DRONING: NOUN

A single tone repeated with different words or different rhythms (especially in rendering liturgical texts)
A succession of sounds or words uttered in a single tone of voice.
A chant in a single tone.
Sameness or dull repetition in sound, style, manner, or color.
A single or uniform tint or color.
In rhetoric, a sameness of tone; the utterance of successive syllables at one unvaried pitch, with little or no inflection or cadence.
Monotony or sameness of style in writing or speaking.
An unchanging intonation
A single tone, without harmony or variation in pitch.
Recitation of words in such a tone, especially in a church service, sometimes with harmonic accompaniment and with occasional inflections or melodic variations; intoning; chanting.
Something spoken or written in one tone or strain.
A single unvaried tone or sound.
The utterance of successive syllables, words, or sentences, on one unvaried key or line of pitch.
A single unvaried tone of speech or a sound
In music:

Sounded or spoken in a tone unvarying in pitch
Of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value
Property of a function to be either always decreasing or always increasing
Having a single unvaried pitch
Characterized by or uttered in a monotone.
Of or having a single color.
Designating sequences, the successive members of which either consistently increase or decrease but do not oscillate in relative value. Each member of a monotone increasing sequence is greater than or equal to the preceding member; each member of a monotone decreasing sequence is less than or equal to the preceding member.

Bland, Mumble, Drawl, Staccato, Decreasing, Chant, Unmelodious, Increasing monotonic, Decreasing monotonic, Drone, Unmusical, Monotonic, Monotonous, Unmelodic, Droning

Whir, Cacophony, Screeching, Shrilling, Wail, Tinkly, Whine, Moans, Bleats, Thrum, Hum, Abuzz, Buzzing, Noisy, Monotone

Bland, Mumble, Drawl, Staccato, Decreasing, Chant, Unmelodious, Increasing monotonic, Decreasing monotonic, Drone, Unmusical, Monotonic, Monotonous, Unmelodic, Droning

Whir, Cacophony, Screeching, Shrilling, Wail, Tinkly, Whine, Moans, Bleats, Thrum, Hum, Abuzz, Buzzing, Noisy, Monotone

Noise, droning ambience and naive electroacoustic experimentation has never sounded this intense.
Ordinarily, I find that droning bagpipes can be a tad grating.
Christ, Jerusalem, drunk droning, sex allegations, CVS, avocados, and more.
Straight on and forward in a droning, mindless trance.
Testing is no more a dull and droning job.
The smoke slowly cleared, and insects resumed droning.
This is not the authorial voice droning on.
Both of these can be dry and droning.
Barlow was slumped against his desk, droning on.
An acoustic guitar and various other droning instruments.