| Notation | Term | Meaning |
| D | Document | A text document consisting of a set of words |
| W | Word | A sequence of non-blank characters |
| WL | Word List | A list of meaningful words |
| SW | Stop Words | A collection of stop words |
| S | Stemmed Word | The stem of the word |
| FC | Frequency count of a word | The number of times the word is found in the document |
| T | Frequency threshold | User Input criteria to find dense words |
| N | Document size | Total number of words found in the document |
| M | Extracted words size | Total number of words from document after removing stop words from the N words. |
| MS | Min Support | T * (N/ M) |
| DW | Dense Word | A word whose frequency count (FC) in the document is greater than or equal to the Min Support (MS) |
| CWx | Candidate Word phrase of length x in document, D | Sequence of x Dense Words which could be the Frequent Word phrase for the document, D |
| FWx | Frequent Word phrase of length x in document, D | Candidate Word phrase of length x whose FC is greater or equal to Min Support and can be considered as a keyword phrase of length x for Document, D |
| KW [i][j] | Keyword Set | A table (2 dim array) of frequent word phrases FWi,.i.e. ith row consists of all frequent word phrases of length i. KW[i][j] represents the jth FWi, frequent word phrase of length i |