[Jim McDougall]

IMO, most definitely a 'machete' and as these were locally made usually by blacksmiths, there is no 'standard' simply a pragmatic following of general functional form for an agricultural tool.
The term 'machete' has a pretty tortured etymology stemming loosely from Latin terms for hammer or club, which became 'mazo' (=club, Sp.) then more dramatic 'macho' (=sledge hammer).
The term 'machete' is Spanish diminutive to that term, which became assoc. with these heavy chopping tools.

As they were open hilted and resembling short swords, they often found use aboard Spanish ships (examples found on Atocha wreck, 1622; and Maravillas wreck 1649) as weapons but more ashore for clearing through vegetation. The use of 'machetes' as weapons is well known to the present day, and tools as weapons to weapons as tools, is a pretty standard exchange. I would note that many of the 'machetes' (later becoming 'cutlasses' by term) came from these used by Basque peasantry in fields and ended up on vessels out of the well known port of Bilbao ("Small Arms of the Spanish Treasure Fleets", Noel Wells, 2006).

It is always hard to identify privately made knives and tools as they are typically unmarked, only nominally follow established forms, and as they remained in use for generations, were traded or sold off without provenance its anybodys guess. The blade tip does have a Bowie gestalt so could very well be Spanish colonial and probably 19th c. possibly early. As well observed by Mark, the blade tip does have a remarkable resemblance to the short and heavy Chinese da dao. Chinese influences were of course well known in that far western part of the 'Spanish Main', in the Philippines.