nicotine-containing product

Parent class and superclasses all the way to to 'Entity'

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This specifies terms that are often used instead of the formal label. A given synonym may relate to more than one label and labels may have more than one synonym so it is better to use the formal label than any synonyms when writing to avoid confusion.

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This indicates whether the entity has fuzzy boundaries e.g. adolescence. In that case users of the term must precisely specify the operationalisation of the class in each usage.

This is optional text explaining how the entity was developed and the reasoning behind choice of label and definition