— Variable: global-abbrev-table

This is the abbrev table for mode-independent abbrevs. The abbrevs defined in it apply to all buffers. Each buffer may also have a local abbrev table, whose abbrev definitions take precedence over those in the global table.

— Variable: local-abbrev-table

The value of this buffer-local variable is the (mode-specific) abbreviation table of the current buffer.

— Variable: fundamental-mode-abbrev-table

This is the local abbrev table used in Fundamental mode; in other words, it is the local abbrev table in all buffers in Fundamental mode.

— Variable: text-mode-abbrev-table

This is the local abbrev table used in Text mode.

— Variable: lisp-mode-abbrev-table

This is the local abbrev table used in Lisp mode and Emacs Lisp mode.