Recovery Partitions Identification

[WAS_MI]

I recently acquired an HP Pavilion Notebook, Model 15t-au100 from an old friend from an old friend. My disk utility software,
DFSee, displays the following as the partitions:
|ID |ux|Dr|Type, description|Format |Related |VolumeLabel|OS2-LVM/BM / GPT| Size MiB |
+--</dev/sda GPT disk 1>--------+--------+-----------<Model=ST2000LM003 HN>-------+
|01 | | |Fsp + GPT hdr/pta|-- -- --|-- -- --|- - - - - -| | 1.0|
|01 | 1| |EFI System (ESP)|FAT32 |MSDOS5.0|NO NAME |EFI system parti| 260.0|
|02 | 2| |MS Reserved (MSR)| |Windows | |Microsoft reserv| 16.0|
|03 | 3| |Windows BasicData|NTFS |Win NT |Windows |Basic data parti| 134394.0|
|04 | | |FreeSpace GPT |-- -- --|-- -- --|- - - - - -| | 1758580.0|
|04 | 4| |Windows Recovery |NTFS |Win NT | |Basic data parti| 980.0|
|05 | 5| |Windows BasicData|NTFS |Win NT |RECOVERY |Basic data parti| 13493.0|
|08 | | |Fsp + GPT pta/hdr|-- -- --|-- -- --|- - - - - -| | 5.1|

As I want to delete unnecessary partition, so as to add new partitions for applications and another OS, can anyone tell me what are
sda4 and sda5? DFSee, at least, considers them BOTH to be Recovery partitions. (I do not need any recovery partition as I have
already used DFSee to backup the partition information and images of all of the partitions, including sda4 and sda5.)

Any advice on the difference between them, as well as the need for either of them, will be most appreciated.