Some of the rules are, avoid long sentences, avoid unusual or difficult words, select word order with care, put modifiers close to what is modified, delete surplus words, use active base verbs, and use concrete words such as «the farmer» or a surname rather «the plaintiff» or «the appellant». (slaw.ca)
Vocabulary Memory Match uses images to help ELLs with concrete word meanings. (spellingcity.com)
Seeing something I do naturally brought into concrete words and ideas is great.» (sanfordinspire.org)