In the Resident Evil fandom, terms like reboot; remake; port and update are thrown around with great risk of misunderstanding. This page will explain below their meanings.
A remake is a film or game that pays homage to an earlier title in terms of story. Film examples include the 1990 version of Psycho and the 2004 version of Dawn of the Dead. There are currently only two home console remakes in the Resident Evil franchise (ignoring any mobile phone games based on console titles) - 2002's Resident Evil and 2019's Resident Evil 2, remakes of the 1996 and 1998 titles of the same names, respectively.
A reboot is a film or game that completely overhauls the established universe of the source material. Traditionally this results in it completely ignoring the previous films and starting anew, as the case of Friday the 13th (2009) or Fantastic 4 (2016). There have currently been no reboots in the Resident Evil franchise.
A re-release is when a film or game is released for a second time or more. In games this might be on a new generation of consoles.
A port is the specific re-release of a game onto another console. As ports use the data of the original, they are not remakes, though may have additional features. Examples of this include Resident Evil CODE:Veronica X (2001), the PlayStation 2 re-release of the Dreamcast-exclusive Resident Evil CODE:Veronica (2000), and Resident Evil: Revelations: Unveiled Edition (2013), which was the home console port of Resident Evil: Revelations (2012), a Nintendo 3DS exclusive.