Kindly assist to answer the vocabulary, and question 3 and 4

Java Programming 3-2: Use regular expressions Practice Activities Lesson Objectives: Use regular expressions .Use regular expressions to search, parse, and replace strings. Vocabulary: Identify the vocabulary word for each definition below. Any symbol in regular expressions that indicates the number of occurrences a specified character appears in a matching string A regular expression symbol that represents any character will create a match A class in the java.util.regex package that stores the format of a regular expression Segments of regular expressions starting with "(" and ending with"", which may later be called by the Matcher method group(groupNumber) Used in regular expressions to allow character variability; may contain either a specified range of characters of a group of character options. A class in the java.util.regex package that stores the possible matches between a Pattern and a String. A character or sequence of characters that represents a string or multiple strings and allows for variability in matches