1. A computer-implemented method, comprising: generating, by a processor of a machine, a user interface for presentation on a user device, the user interface including perceptible user interface elements allowing a user to view title information; receiving a title of an item being listed; determining, by a processor of the machine, a concept, the concept including two or more terms in the title of the item being listed; accessing, from a networked database, a plurality of co-occurring terms stored in a co-occurring terms table, each co-occurring term in the co-occurring terms table including a first set of words and a second word, the first set of words and the second word corresponding to terms that have occurred together in stored search queries and to terms that have occurred together in stored item information corresponding to title information of items previously listed for sale on an online marketplace; generating, by a processor of the machine, a matching of the concept with one or more co-occurring terms of the plurality of co-occurring terms, the matching being based on the concept matching the first set of words of the one or more co-occurring terms; selecting, by a processor of the machine, at least one co-occurring term from the plurality of co-occurring terms based on the matching and based on a desirability score associated with the at least one co-occurring term; transmitting instructions to cause display, on the user interface, of the at least one co-occurring term and the associated desirability score; generating, using one or more processors, a suggestion of a modification to the title of the item being listed, the modification modifying the title by adding to the concept or removing from the concept a second word of the selected at least one co-occurring term, the suggestion of the modification including presenting the concept in conjunction with the second word of the selected at least one co-occurring term; and transmitting instructions to cause display, on the user interface, of the suggestion of the modification.
2. The method of claim 1 , wherein accessing the plurality of co-occurring terms is performed by searching one or more of the stored search queries and one or more of the stored item information corresponding to title information of items previously listed for sale on an online marketplace.