Use the Search Box on

On every page on this website there is a Search Box in the top right corner.  All content on this website is searchable.

Use the Search Box to:

  • find exactly what you're looking for
  • expand your learning horizons
  • save time


You can type/enter up to 20 characters.  E.g., sustainability {14 characters total}

  • Use "  "  marks to find exactly what you're looking for.  E.g., "carbon emissions" {18 characters total; note the "  " marks count as characters}
  • If you want to search for a term that is greater than 20 characters, you will need to truncate your entry.  E.g., "social sustainability" {23 characters total} needs to be entered as "social sustainabil" {20 characters total}
  • If you do not include " " marks and, for instance, were to just type/enter carbon, the Search Box results would include any terms on the website which include carbon [carbon emissions, carbon dioxide, carbon trading, carbon offsetting, ...].

After you have typed/entered a term, click or tap on Search! button (or on ENTER or GO on your computing/mobile device).

  • To view the Search Box results, scroll all the way down to the bottom of the page you are on.

Note: If you want to edit your search term (e.g., after searching for "carbon" you want to change your search term to "low-carbon") do NOT type/enter "low-carbon" in the Search Results area; if you do, you will get a 500 Error message.  You need to type/enter any search term (in this example "low-carbon") in the Search Box (top right corner of the screen).

The 'Featured Vocabulary, Grammar Focus, & Language Note(s)' Box: An Introduction

Featured Vocabulary
For Sample Purpose only

 Sustainable ESL Lexicon
 Basic ESL
 Academic Word List
environmental (ADJ)  
greed (N-UNCOUNT)
greenhouse effect (N-VAR)
prosperity (N-UNCOUNT)

right (N-COUNT), rights (pl-n)

rights (N-PLURAL)

sustain (VERB-T)

(sustains, sustaining, sustained)
sustainability (N-UNCOUNT) (oft the N of n)
sustainable (ADJ)
sustainably (ADV)
Grammar Focus: --
Language Note(s): --

Each article includes a Featured Vocabulary, Grammar Focus, and Language Note(s) Box.

Featured Vocabulary:

  • listed in alphabetical order
  • Sustainable ESL Lexicon: these words will be listed in the Sustainable ESL Lexicon (which we may publish one day)
  • Basic ESL: these words are identified as important and/or frequently-occurring English words in well-regarded ESL Learner dictionaries (e.g., Oxford Advanced Learner's Dictionary's Oxford 3000™ list, Macmillan Dictionary's "red words" marked with *, **, or ***)
  • Academic Word List: these words are listed on the Academic Word List (for more information, visit here)
  • Other: all other featured vocabulary
  • The word class of each target word is provided. [See below for details.]
  • If relevant, information about word pattern is provided. [See below for details.]

Grammar Focus: specific grammar issue or issues.

Language Note(s) [if necessary]: an explanation about some specific aspect of a target word.  For instance, a word may be figurative or informal, or considered offensive or old-fashioned.

Word Class

Information about a target word's word class (e.g., noun, verb, adjective, adverb, quantifier, ...) is provided.

Nouns that are countable (i.e., N-COUNT) are listed in their singular form, followed by their plural form (i.e., pl-n).

Verbs are listed in their base form, followed by the second person singular, present participle and past participle forms.

Gerunds [also known as verbal nouns] are identified as uncountable nouns (i.e., N-UNCOUNT).

Word Patterns

Sometimes some additional information is provided about word patterns: E.g., sustainability (N-UNCOUNT) (oft the N of n) For instance, "the sustainability of wind energy ..."

pl: plural | Example: pl-n = noun in the plural
sing: singular | Example: sing-n = noun in the singular
supp: supplementary information accompanying a noun
usu: usually | Example: N-COUNT usu sing

  singular noun
    collective singular noun
  plural noun
  countable noun
    collective count noun
  uncountable noun
    collective uncount noun
  variable noun
    collective variable noun
  intransitive verb
  transitive verb
  ditransitive verb
phrasal verb
  plural quantifier