longcut is correct. Fluency is oral reading fluency (reading grade-level passages out loud, quickly and accurately). Comprehension is reading comprehension (reading grade-level passages silently or out loud, and then answering a series of questions about them, with the text available to reference). Word reading is single word reading accuracy (accurately pronouncing a list of real words).

The ERB is probably this:
https://www.erblearn.org/services/ctp-overview

...pronounced like the long vowel and first letter of the alphabet...