Label: a meaningful part of a phrase. It can be one or more words. Examples: red, emerald green, audi, dresses.
Label group: what kind of thing a label is. For instance, red is a colour, as is emerald green , audi is a brand, dresses is a category. See this Site Topic doc on labels & label groups for more information.
Topic: a set of labels. For instance, red Audi or emerald green dresses are both topics, composed of two labels each.
Grammar: a set of label groups. For instance, colour + brand and colour + category are both grammars.
Positive label groups: the label groups required for any generated topics. At least one label from any of these groups is required for a topic to be created. For example, if you select category, sub-category, and product_line as positive label groups, every generated topic will contain at least one label from one of these groups, ensuring topics have a meaningful noun (like eye drops , a-line dresses, or mac books) rather than just descriptive terms.
Product count: how many relevant products or listings match a topic.
Ngrams: we use bigram (also written as 2-gram) or trigram (also written as 3-gram) to mean a topics with two or three labels, respectively. Similarly, a 4-gram or 5-gram topic is a topic made of four or five labels respectively. Collectively these are called ngrams.
Maximum Best Position: the highest Google rank threshold for an existing page; if a page ranks better than this position for a keyword similar to the topic, the new topic is rejected to avoid duplication.
Minimum number of products: the required count of relevant products a topic must match for us to consider creating a new category page.
Minimum demand: the required monthly search volume a topic must have in the local market to be eligible for page creation.
Reject sieve: the automated set of checks that filters topics into rejection reasons like duplicated, already ranks, insufficient products, irrelevant products, or low demand, leaving only topics worth publishing as new pages over.