Hi,
Yes, in many computer languages your "Words" are called a "String" or "Array" (of ASCII characters) but as Westy says, these are not supported directly by PICaxe Basic. Except within "printing" commands such as SERTXD and SEROUT where the string can be written within Quotation marks, e.g. SERTXD("Light").
However, it's easy to write a Subroutine to send the individual (ASCII) characters to the display. The subroutine needs a "pointer" (variable) to the address of the first character, and also an indicator of how many characters to send! That might be another variable specifying the length (or the end address) or by a "Terminator" byte placed between the separate strings, for example a zero byte (not the ASCII character for zero) or CR, LF, TAB, etc.. Then the subroutine loop would read and send characters to the display until the Terminator is encountered and then RETURN.
Cheers, Alan.