Semantic core is a set of queries that are most appropriate for a particular resource.
First of all, there is a selection and grouping of keywords that will be appropriate for attracting visitors to the site. Particular attention should be paid to the analysis of the possible target audience, which has its own interests and objectives. When analysing potential visitors, also takes into account their age, gender, place of residence. If for a minute to be in the shoes of the user, you can quickly orientate in convenient and frequent queries.
For example, if the promoted site is dedicated to some sushi bar in Kiev, which performs dishes to order with delivery, in this case, the main query is likely to be "sushi delivery in Kiev".
To promote any site requires a separate strategy, according to which will be optimised resource and increase its ranking in search engines
When collecting key phrases it is important to observe their style. When entering keywords you can see similar queries of visitors "sushi delivery kiev", "sushi delivery kiev sites", "sushi kiev official site delivery" and others.
There is a similar advertising service - Google AdWords. Thanks to this programme, you can easily manage advertising campaigns, budget, targeting settings and more.
Google AdWords has a free keyword planner, with which you can select keywords and expressions for natural promotion in search, as well as group them into close in meaning.
If you still don't understand the topic, AVSEO experts will be happy to help you.