LoRa is just a modulation method, much like your classic FM or AM radio, though invented in the last couple of years. The main outcome of LoRa modulation is long range radio communication that uses very little energy (1-3KMs in urban is normal, 10-20KMs line of sight)
With that in mind, there are many products that simply use LoRa modulation, on a single channel, to send/receive data.
LoRaWAN is basically a collection of notes by smarter-than-average people that were compiled into a standard, which allowed tens of thousands of LoRa-compatible devices to operate in a Wide Area Network (WAN), without any issues. Hence the name, LoRaWAN.
LoRaWAN devices are often the preference - they typically have bigger/better product design teams and a very polished software/hardware stack. Such as LoPy4.
LoRaWAN in Australia operates between 915-930Mhz, and the region codes (used for software setup) are either AU915 or AS923. Region code setup is often just a line of code, from that point forward the way LoRaWAN is used is common for all devices. Lots of intel out there, hopefully, this helps bridge some gaps.