The best replacement for keyword is key word.

The best alternatives to keyword are rated as following:
★★★★★  key word
★★★★  reserved word
★★★  tag
★★  item
★★  search term
★★  subject heading
★  subject
★  identifier
★  part number
★  controlled vocabulary
  keyphrase
  meta tag

Your alternative for keyword is not listed? Suggest!
Speaking about keyword, one probably shouldn't forget about javascript.

Other search terms related to keyword and their ratings are:
★★★★★ javascript
★★★★ c
★★★ vb
★★★ sql
★★★ sql server 2005
★★ vb net
★ delphi
★ java
oracle
You have in mind a companion for keyword and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of keyword in all years. Click on graph for more.
keyword
key word
reserved word