different between billman vs tillman

English

bill +? -man

billman (plural billmen)

A man who uses, or is armed with, a bill or hooked axe.
- 1859, John Harland, The Lancashire Lieutenancy Under the Tudors and Stuarts […]
  each class had its peculiar head - covering , - a steel cap or scull distinguished the archer ; a salade the billman ; while the musketeer wore a morion […]
- 2014, Toby Clements, Kingmaker: Winter Pilgrims: (Book 1)
  He is staggering as the other billmen lash their pikes at him.

From Middle English tylman; equivalent to till +? -man.

tillman (plural tillmen)

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