Translation ,as a process,is always
uni directional ,namely it is always performed in a given direction from a
source language (SL) into a target language(TL).
if you pay careful attention to the
words underlined in the definitions above you will learn that:
1.the words equivalent is used
by catford ,savory ,nida and pinchuck.while Mc Guire uses the words similar
which is synonymous to the word equivalent